Abstract: The application relates to transmission power control in transmission systems, in particular mobile radio systems. One object of the invention is to indicate a way of guaranteeing, compared with the state of the art, improved, in particular dynamic, control of transmission powers within predefinable emitted interference requirements with, in particular, increased efficiency and reduced power consumption. For this purpose, the invention provides for the filtering of an amplified transmission signal to be divided up between a narrower-band tunable pre-filter (4) and a broadband post-filter (10). To perform this operation, a signal-amplification circuit is proposed which comprises a tunable filter (4) which is connected downstream of a power amplifier (2).

Abstract: The disclosed embodiments relate to a system and method for providing user specific beams in a fixed beam network, the fixed beam network comprising a plurality of fixed beams, each of the plurality of fixed beams being defined by a plurality of fixed beam correlation coefficients. The system may comprise a device that computes reception correlation data for a received signal, and a beamformer that is adapted to determine transmission weighting coefficients to be applied to a return signal based on the difference between the reception correlation data and the fixed beam weighting coefficients associated with at least one of the plurality of fixed beams.

Abstract: Packets are scheduled for transmission over a communication link in a network, using a Largest Weighted Delay First (LWDF) scheduling policy. A delay measure Wi, i=1, 2, . . . N, is computed for each of N packets, each associated with a corresponding one of N data flows and located in a head position in a corresponding one of N data flow queues. The computed delay measures are then weighted using a set of positive weights ?1, ?2, . . . , ?N. The packet having the largest weighted delay Wi/?i associated therewith is then selected for transmission. In an embodiment configured to meet a quality of service (QoS) requirement specified in terms of a deadline Ti and an allowed deadline violation probability ?i, e.g., a requirement specified by P(Wi>Ti)??i, the weights ?i in the set of positive weights ?1, ?2, . . . , ?N may be given by ?i=?Ti/log ?i. The invention can also be used to meet other types of QoS requirements, including, e.g., requirements based on packet loss probabilities.

Abstract: A method for recognizing a table structure from delineated table region in an electronic document using hierarchical clustering of data strings. The cluster groupings are segregated effectively using the distances from a positional vector associated with words and groups of words rather than a minimum number of blank spaces between words. Once a data tree of the hierarchical clusterings is constructed, the tree is scanned downward from the root to find appropriate column boundaries using a columnization algorithm. Then using successive heuristic algorithms, determine column and row headers and row boundaries.

Abstract: When using four transmit antennas, conventional channel coding is employed for a decoupled space-time coding approach for each of a number, L, of data substreams derived from the overall source bit stream. The symbols of the data substreams, after any encoding, are processed and the resulting derivatives of the encoded data substreams, which includes at least the complex conjugate of one of the encoded symbols, are grouped to form four transmit time sequences each one spanning L symbol periods which form a transmission matrix B. Each row of the matrix corresponds to an antenna, and the elements of each row represent the samples of a temporal sequence that is emitted by the antenna in L symbol periods.

Abstract: A method is provided of setting up a call connection to a mobile station operative to communicate with a Customised Application for Mobile Enhanced Logic (CAMEL) telecommunications network. The call is initiated by an Open Service Architecture (OSA) application, which causes a message to be produced which indicates to the network that the mobile station is now available to make a ring back call connection. The network setting up the call connection in response to the message.

Abstract: A communication device is described that includes a POTS interface system, a processing system, a conversion system, a voice interface system, and a digital interface system. When in operation, the POTS interface system receives analog voice signals for a call. The POTS interface system converts the analog voice signals from analog to digital to generate digital voice signals. The processing system performs an application on the digital voice signals to provide a presentation format of the digital voice signals of the call to a user. The conversion system then converts the digital voice signals into analog voice signals and a voice interface system transmits audible signals to the user. The digital interface system receives digital data signals from a data service provider and the processing system performs an application on the digital data signals to provide additional data to the user.

Abstract: In a heterogeneous mobile telecommunication system such as the Universal Mobile Telephone system, a system and method of resource allocation comprising the steps of determining the current proportion of each rate traffic for a telecommunication cell; the base transceiver station controlling the cell then applying a predetermined threshold to the loading level in that cell.

Abstract: A transmitter of digital data includes a modulator with an input for a carrier signal and an input for a first stream of control symbols. The modulator modulates the carrier signal with a second stream of symbols produced by the modulator. Each symbol of the second stream has a value that corresponds to a sum of the present control symbol and the last K first symbols of the first stream. The integer K is greater than one.

Abstract: A method for calculating an estimate of the clock skew between a sender's clock and a receiver's clock in a packet-based communications network. An adaptive algorithm is employed in which a recursive least squares approach is used to calculate an estimate of the clock skew based on the transmission of a given (i e., the “current”) packet, which estimate is further based on a previous estimate thereof (“a first approximation” thereof). This illustrative process then iterates with each new packet, producing increasingly accurate estimates of the clock skew.

Abstract: A method of automatically queuing calls for later transmission in connection-oriented networks instead of blocking them when network resources are unavailable at the time the request is received, as currently done. A simple call queuing method holds up call setup messages at each switch along an end-to-end path of a network until resources become available. This simple, known queuing method suffers from poor network utilization and long call queuing delays. However, if calls that can be queued have known holding times, a call scheduling method that results in reduced call queuing delays and improved network utilization according to the present invention can be realized.

Abstract: A method comprises the steps of directing a call intended for a mobile (531) to a virtual tandem switch (501). The virtual tandem switch (501), which may include multiple converters (505 and 507) queries a home location register to obtain call information for the mobile (531). The call to the mobile (531) is set up over a packet-based transport network (523).

Abstract: Techniques and systems for control of optical switching arrays are described. A switch array controller according to an aspect of the present invention operates so as to achieve reduced power consumption and maintain crosstalk within acceptable limits. Various rules are applied in order to insure that the desired criteria are met. In order to reduce transient effects, switching from one output to another is accomplished in a sequence chosen to maximize the number of transitions occurring in those portions of the array not carrying a signal, and to minimize the number of transitions that occur in portions of the array carrying the signal. Transitions are made in the portion of the array to which the signal will be directed, then a switch is transitioned between the old and new signal paths, and finally further transitions are made in the portion of the array within which the signal was previously directed.

Abstract: A biological/chemical detector is disclosed that is capable of manipulating liquids, such as reagent droplets, without relying on microchannels. In a first embodiment, fluid flow is passed through the detector, thus causing particles wholly or partially containing an illustrative chemical compound or biological species to be collected on the tips of nanostructures in the detector. A droplet of liquid is moved across the tips of the nanostructures, thus absorbing the particles into the liquid. The droplet is caused to penetrate the nanostructures in a desired location, thus causing the chemical compound or biological species in said liquid droplet to come into contact with, for example, a reagent. In another embodiment, a fluid flow is passed through the nanostructured surfaces of the detector such that the chemical compound and/or biological species are deposited between the nanoposts of a desired pixel.

Abstract: The instant presence system authoritatively determines the present communication location of a subscriber, who may be at any of a number of possible locations. When the subscriber changes their location, they can use a subscriber communication device that is operational at their new location to update their point of presence on the telephone communication network. The instant presence system enables the communication network to complete a communication connection from a calling party to the called party with certainty. The calling party therefore can reach the called party with certainty by simply dialing a single listed directory number associated with the called party, relying on the instant presence system to complete the call connection to the called party, regardless of the present location of the called party.

Abstract: A method and apparatus for communicating files over a communications network in which links to files, such as hyperlinks, comprise a multilink. A multilink is a hyperlink associated with a plurality of electronic addresses, each leading to a different physical file. Selection of a multilink results in the generation of a menu of options for all of the different files that can be returned to the client corresponding to the selected multilink. Selection of an option results in returning of the associated file to the client.

Abstract: The present invention provides a dual organic field-effect transistor (OFET) structure and a method of fabricating the structure. The dual OFET structure includes an n-type organic semiconductor layer and a p-type organic semiconductor layer in contact with each other along an interface and forming a stack. The dual OFET structure also includes a source electrode and a drain electrode, the source and drain electrodes being in contact with one of the organic semiconductor layers. The dual OFET structure further includes first and second gate structures located on opposite sides of the stack. The first gate structure is configured to control a channel region of the n-type organic semiconductor layer, and the second gate structure is configured to control a channel region of the p-type organic semiconductor layer.

Abstract: A controller component of one embodiment of a system assigns a first number to a mobile station that upon location of the mobile station at a first location allows connection to the mobile station of a call that employs the first number. A controller component of the system assigns a second number to the mobile station that upon location of the mobile station at a second location allows connection to the mobile station of a call that employs the second number. The second number differs from the first number. The second location differs from the first location. In another embodiment, a controller component of a system assigns to a mobile station a number that upon location of the mobile station at any one or more of a temporary user zone and a base user zone allows connection to the mobile station of a call that employs the number. A controller component of the system selects the number to comprise fewer than seven digits.

Abstract: For use with a database that accommodates distinct value queries having predicates, a distinct sampling system and a method of distinct sampling. In one embodiment, the distinct sampling system includes a scanning subsystem that is configured to scan each row in the database for a distinct target attribute, employ a hash function to map the distinct target attribute to an attribute priority level, maintain random samples of each row based on a sample priority level and a sample size, and produce a distinct sample therefrom. The distinct sampling system further includes a distinct query estimator that is configured to receive the distinct value queries, cause the distinct value queries to be executed on the distinct sample to retrieve a result, and adjust the result to produce a distinct estimate therefrom.

Abstract: Apparatus comprising: a first substrate; a dielectric layer comprising a first dielectric material on the first substrate, the dielectric layer having a dielectric layer thickness and being traversed by through holes passing from an interface with the first substrate, to an opposite side of the dielectric layer; and a second dielectric material at least partially blocking the through holes. Methods for making such apparatus.