Abstract: Provided is a mobile apparatus for use in a wireless cellular-based communication system. The apparatus includes means for conducting a wireless cellular-based call (e.g., a packet data call) by communicating with a first base station means for automatically performing the following steps in response to a completion of the wireless cellular-based call: (i) storing overhead information specifically pertaining to the first base station; (ii) selecting a second base station with which to communicate, based on a comparison of plural available base stations; (iii) determining whether the second base station is identical to the first base station; and (iv) utilizing the stored overhead information for communicating with the second base station if and only if the second base station is identical to the first base station.

Abstract: A method, a system and a module are proposed for detecting and locating faults in an optical multi channel network composed of network nodes. The method includes assigning different sub-carrier pilot tones to a number of the nodes comprising Network Elements (NE), applying the different sub-carrier pilot tones to any signal added to the network via the respective nodes, checking presence of one or more of the sub-carrier pilot tones at one or more points of the network, and, based on results of the checking, locating a faulty section of the network in case a fault occurred.

Abstract: A method for assigning a channel in multi-FA CDMA mobile communication system according to the received power prevents communication quality of a FA from being inferior to that of the others by managing the interference level of the FA. The method comprises the steps of: comparing a first threshold value with received power when the base station receives a new call request; assigning a traffic channel in a first FA of the request, if the received power is less than the first threshold value, and searching a second FA of which received power is least, if not; comparing a second threshold value with the received power of the second FA; and assigning a traffic channel in the second FA if the received power is less than the second threshold value, and rejecting the request, if not.

Abstract: The present invention relates to an interference cancellation receiving method in an OFDMA mobile communication system, and an apparatus using the same. For this purpose, the present invention provides an interference cancellation receiving method for outputting a data symbol from which an interfering signal is canceled by receiving subcarriers including a data signal from a serving base station, the data signal including interfering signals from a neighboring base station and a remote base station, estimating a channel response of the serving base station and the neighboring base station by using at least one adjacent pilot subcarrier in the frequency axis or time axis, computing a weight value for canceling the interfering signals, and combining at least one data subcarrier having a repeated identical data symbol among received subcarriers with the weight value.

Abstract: Systems, methods, and software are described for benchmarking the location determination capabilities of a wireless communications network. A mobile communications device is configured to receive data identifying a reference location for the device. A communications network, communicatively coupled with the mobile communications device, calculates a computed location for the device using an alternative location determination technique. The reference location and computed location may be determined for any number of additional devices, as well. The accuracy and reliability of a system may then be assessed by comparing one or more computed locations with associated reference locations. The latency attributable to the calculation of one or more computed locations may also be determined.

Abstract: The invention provides a portable and autonomous assistance device to derive information on faults in a private telecommunication installation comprising particularly equipment units to assist the client owning the installation in maintaining the latter. A maintenance session is selected in a maintenance server of the service provider managing the installation as a function of information transmitted by the assistance device so as to provide instructions in the device. The address of the server and an identifier of the equipment unit are rapidly read by means of a bar code reader which can also read bar codes in a user manual. The assistance device also serves to configure a terminal (TE) by means of a configuration session opened in a server (SFT) of the terminal manufacturer.

Abstract: The invention concerns a local network for the transfer of information among several communication devices connected to an alternating current electrical power distribution system with a pre-determined frequency, the information conveyed in the local network being transferred in the form of electrical signals forming waves in the electrical power distribution system in a frequency band higher than the pre-determined frequency, the electrical power distribution system being connected to an electrical power supply system, characterized in that the local network comprises at least one wave reflection device forming reflected waves in the power distribution system and attenuating the waves of the power distribution network in the electrical power supply system. The invention also concerns the reflection device.

Abstract: Authentication and signature process with reduced number of calculations. The process involves a first entity called the “prover”, which possesses a public key v and a secret key s, these keys verify the relation v=s?t (mod n), where n is an integer called modulus and t is a parameter, and a second entity called a “verifier”, which knows the public key v. This process implies exchange of information following a “zero-knowledge protocol” between the verifier and the prover and cryptographic calculations on this information, some calculations being carried out “modulo n”. The process of the invention is characterised by the fact that the modulus n is specific to the prover that communicates this modulus to the verifier.

Abstract: A method, a system and a device for encrypting an optical signal to be transmitted via an optical fiber communication link by causing controlled chromatic dispersion of said signal. The controllable decryption device, as well as the controllable decryption device, can be implemented in the form of a variable dispersion compensation module controlled by a decryption key. In the system, the encryption device and the decryption device are controlled in synchronism by an encryption key and a decryption key respectively, the keys preferably being functions of time symmetric with respect to the time axis.

Abstract: The present invention relates to a mobile communication terminal including an electronic compass module and a method for playing a network mobile game by using the electronic compass module. The method for providing the network mobile game service by using a mobile communication terminal incorporating an electronic compass module therein, comprising the steps of: (a) providing a mobile game list to the mobile communication terminal connected via a wireless Internet; (b) clarifying a game mode of a network mobile game selected by the mobile communication terminal; (c) if the selected network mobile game is determined to be a dual mode game, providing a game mode selection screen; (d) if an electronic compass mode is selected on the mobile communication terminal, executing the selected network mobile game; (e) controlling a movement of a user-controlled character; and (f) transmitting a game screen on which the user-controlled character is moved.

Abstract: The mobile telecommunication apparatus (1) comprises a microphone (4), a loudspeaker (3), a transmitter/receiver (7), a control circuit (8) with a memory (9) and a control interface (5, 6) with a display (2). The mobile telecommunication apparatus (1) comprises in memory a collection of so-called personae (10) containing control and viewing parameters associated with each persona, a personae editor (11) designed for read/write access to the parameters of the said collection of personae, and an operating system (12) designed to be executed right from startup by the control circuit (8) in such a way as to drive the personae editor (11) so as to view a so-called main persona on the display (2).

Abstract: An optical switching apparatus in an optical communication network selectively combines and separates, using OTDM and/or WDM, optical signal samples that are obtained by a spread spectrum technique or a combination of optical signal samples that are obtained by a spread spectrum technique and optical signal samples that are carried over discrete channel wavelengths. In upstream communication, when optical signal samples that are received at the optical switching apparatus include upstream optical signal samples that are obtained by a spread spectrum technique, the optical switching apparatus optically converts the optical signal samples provided thereto into a broadband combined series of upstream optical signal samples and routes the broadband combined series of upstream optical signal samples to a destination route.

Abstract: A novel method and apparatus for applying overlaid perturbation vectors for gradient feedback transmit antenna array adaptation is disclosed. The method and apparatus of the present invention allows a communication system to reduce transmit power that is associated with dedicated pilot signals by overlaying perturbation vectors and measuring channel estimates and demodulation channel estimates during a measurement time interval that comprises a plurality of feedback time intervals. The present inventive method utilizes channel estimates that include the effects of previous perturbation vectors, subsequent feedback vectors and intermediate feedback decisions. The inventive method extracts a coarse gradient estimate by utilizing a continuous summation of overlaid weight vector perturbation vectors and updates the weighting vector accordingly.

Abstract: In a digital telecommunications network having first and second addressing zones, a name and address server in the first addressing zone receiving from a first address of the first zone, assigned to a source machine, a request to provide an address in relation to the name of a destination machine situated in the second addressing zone, sends to a second address of the first zone a first packet containing at least the said name of destination machine, said second address of the first zone being associated in a static manner to a first address of the second zone, assigned to a management unit. The management unit sends to an interface a second packet destined for the name and address server comprising as origin address, a second address of the second zone assigned to the destination machine.

Abstract: A planar filter has a planar resonator including a conductive region having smoothed contours and supporting a first resonating mode propagating along a first conductive path and a second resonating mode propagating along a second conductive path perpendicular to the first conductive path. The planar filter also has a conductor-free region made in the conductive region and having smoothed contours. The conductor-free region is disposed along a region axis forming an angle with respect to the first conductive path. The conductor-free region causes a perturbation of the symmetry of the planar resonator resulting in a frequency shift of the first and second resonating mode and their mutual coupling.

Abstract: Systems and methods for measuring the performance of a provider of communications service are described. A plurality of mobile communications devices measure average power received, signal to noise ratio, voice quality, blocked and dropped calls, or any combinations of such measurements. The device may also receive a set of data identifying the location of the device. The device may transmit one or more communications signals to a server computer system with such measurements and location data. The measurements and location data may be stored in a database, and new data may be created and transmitted illustrating a subset of the measurements and location data.

Abstract: A system for estimating the transfer function of a transmission channel such as the downlink channel in a CDMA system over which a pilot signal and a data signal are transmitted. The system includes at least one estimator for producing first and second channel estimates from the pilot signal and the data signals and a combination node for combining the first and second channel estimates to obtain final combined channel estimates. The system includes an interpolator module adapted for interpolating the second channel estimates over a basic estimation reference time to produce equal numbers of channel estimates over the basic estimation reference time derived from the data signal and the pilot signal respectively, and possibly rate adaptation modules adapted for mapping the channel estimates on the basic estimation reference time. The combination node is a summation node producing the final combined channel estimates as a sum of the first channel estimates and the interpolated second channel estimates.

Abstract: A system for implementing telephone services on one or more telephone installations, themselves having several telephone terminals managed by one or more private automatic branch exchanges. To this end, the system has a piece of server type computer equipment, accessible by a computer network, and one or more interfaces capable of sending signaling control signals corresponding to the service or services requested to drive one or more automatic branch exchanges, these interfaces being connected for this purpose to telephone lines of the automatic branch exchanges.

Abstract: A method which makes it possible to select a predefined maximum number N of documents from a set of electronic documents. A graph G is constructed on the basis of the set of electronic documents, each vertex of the graph G corresponding to one of the documents of said set and each edge between two vertices of the graph indicating the presence of at least one hypertext link between the two documents, corresponding to the two vertices considered. The method uses the topological properties of this graph to select a subset of N documents. A minor MG of the graph G is generated comprising a predefined maximum number N of vertices by deletion of at least one vertex of the graph G, this deletion being aimed at minimizing for the predefined number N of vertices a predefined distance between the graph G and the minor MG, this distance measuring the perturbation of the neighborhood of the vertices of the graph G that is engendered by the generation of the minor MG.