Patent application number | Description | Published |
20150030004 | SELECTION OF A RADIO CELL SECTOR - The present disclosure concerns radio communication. In one of its aspects, the technology presented herein concerns a method for selecting the most suitable secondary carrier for carrier aggregation when employing a combined radio cell including multiple radio sectors A | 01-29-2015 |
20150063244 | Method and Base Station for Controlling Interference - A method and base station ( | 03-05-2015 |
20150117196 | BASE STATION, AND A METHOD FOR ADAPTING LINK ADAPTATION IN A WIRELESS COMMUNICATIONS NETWORK - A method in a base station for adapting link adaptation of a transmission between a user equipment and the base station is provided. The link adaptation relates to an initial value of a Block Error Rate, BLER, related to the transmission. The base station decides that the user equipment is in congestion responsive to a scheduling bit rate for the transmission in relation to a rate of data packets arriving to or being sent by the user equipment being below a first threshold. Responsive to the user equipment being in congestion, the base station adapts the link adaptation by increasing the value of the BLER of the link adaptation in relation to the initial value, until the user equipment is out of congestion or until the base station detects that any one of the user equipment and the base station tries to send high priority data. | 04-30-2015 |
20150139110 | Methods For Scheduling Communication Resources to a Wireless Device and Scheduling Device - The disclosure relates to a method | 05-21-2015 |
20150146528 | BASE STATION, AND A METHOD FOR PRIORITIZATION IN A WIRELESS COMMUNICATIONS NETWORK - A method in a base station for adapting prioritization of a service of a user equipment over services of other user equipments is provided. The prioritization relates to a transmission between the base station and the user equipment at a scheduling occasion. The prioritization relates to an initial value. The base station decides ( | 05-28-2015 |
20150282173 | FREQUENCY RESOURCE ALLOCATION FOR SEMI-PERSISTENT SCHEDULING - A method for allocating frequency resources for at least two wireless devices in a cell of a wireless communication network. SPS transmissions and automatic retransmissions are applied for the at least two wireless devices. A time difference between an SPS transmission and an automatic retransmission related to the SPS transmission is determined by a round trip time value. The method is performed in a radio base station serving the cell. The method comprises determining at least two different sets of frequency resources for the SPS transmissions of the at least two wireless devices. The method further comprises allocating frequency resources for the SPS transmissions of the at least two wireless devices within an SPS period, such that the allocated frequency resources change between two of the at least two different sets every round trip time value. | 10-01-2015 |
20150282198 | DEVICE AND METHOD FOR ACKNOWLEDGED MODE QoS | 10-01-2015 |
Patent application number | Description | Published |
20110085273 | Circuit Breaker With Improved Re-Closing Functionality - A circuit breaker for protecting a power line. The circuit breaker includes a control unit and a circuit breaking element disconnecting the power line from a power source. The control unit detects a fault on the power line, opens the circuit breaking element, which opening starts a disconnection time interval, injects a test signal into the power line, measures a response, determines an impedance of the power line from the response, analyses the impedance during the time interval based on comparing the impedance with a reference threshold, determines a permanent or a temporary fault based on the analysed impedance, re-closes the circuit breaking element after the time interval if the fault is temporary and keeps the circuit breaking element open after the time interval if the fault is permanent. | 04-14-2011 |
20110188159 | METHOD AND DEVICE FOR SUPERVISING SECONDARY CIRCUIT OF INSTRUMENT TRANSFORMER IN POWER SYSTEM - A method and a protection IED for supervising a secondary circuit of an instrument transformer in a power system are disclosed. The instrument transformer is connected to a power system component. The method includes: detecting, by a protection IED which is connected to the secondary circuit of the instrument transformer and protects the power system component, disturbances in a signal from the instrument transformer; and determining whether a failure occurs in the secondary circuit of the instrument transformer, according to both a disturbance detection result from the protection IED and another disturbance detection result from at least one of other protection IEDs. The other protection IEDs include protection IEDs which are connected to other secondary circuits of the instrument transformer or to secondary circuits of another instrument transformer connected to the power system component, and protection IEDs which are connected to other instrument transformers connected to other power system components connected to the same busbar as the power system component is connected to. The secondary circuit supervision solutions provide more reliable and sensitive performance and need very small amount of information to be collected. | 08-04-2011 |
20120089262 | INTELLIGENT PROCESS INTERFACE AND SUBSTATION AUTOMATION SYSTEM - This specification discloses an intelligent and digitalized process level interface which is referred to herein as an Intelligent Process Interface (IPI). The input of the IPI includes both analog and digital channels and therefore the IPI can be used for substations in transition or retrofit stages with both conventional and non-conventional primary devices. The IPI acts not only as a digitalized interface, but also as an intelligent supervisory and control unit for switching functions. The architecture of the IPI is flexible and allows for the functionality to be distributed to several devices. | 04-12-2012 |
20130077204 | BREAKER FAILURE PROTECTION OF HVDC CIRCUIT BREAKERS - A breaker failure protection system for a high voltage direct current, HVDC, circuit breaker is provided. The circuit breaker is arranged for interrupting a DC circuit upon reception of a trip signal. The protection system includes a current sensor, at least one inductor, and a breaker failure detection unit. The current sensor is arranged for measuring a current I(t) through the DC circuit. The at least one inductor is connected in series with the DC circuit. The breaker failure detection unit is arranged for assessing, whether the circuit breaker has failed, and sending, if the circuit breaker has failed, a trip signal to an adjacent circuit breaker. The assessment is based on the measured current. The stability of HVDC grids may be improved by sending, in case of a breaker failure, a trip signal to adjacent circuit breakers. Further, a method of breaker failure protection for an HVDC circuit breaker is provided. | 03-28-2013 |
20130088802 | FAULT PROTECTION OF HVDC TRANSMISSION LINES - A protection system for high voltage direct current, HVDC, transmission lines is provided. The protection system includes a direct current, DC, bus, a device configured to connect an HVDC transmission line to the bus, at least one DC circuit breaker arranged for disconnecting the transmission line from the bus upon reception of a trip signal, current and voltage sensors, an inductor arranged such that the current through the transmission line passes the inductor, and a fault detection unit. The fault detection unit is arranged for assessing, on the basis of current and/or voltage measurements, whether a fault exists on the transmission line, and sending, if a fault is detected on the transmission line, a trip signal to the circuit breaker. The additional inductance limits the rise in fault current and facilitates a selective fault detection. Further, a method of fault protection for an HVDC transmission line is provided. | 04-11-2013 |
20130328569 | Method And Arrangement For An Internal Failure Detection In A Y-Y Connected Capacitor Bank - A method for detecting an internal failure in a capacitor bank connected to a power system, wherein the capacitor bank includes a plurality of capacitor units that are divided into two Y sections. Each phase in each of the Y sections define a leg and each leg includes series and/or parallel-connected capacitor units. The internal failure may occur in one or more capacitor elements or units or involve one or more legs. The method includes measuring the phase current in one of the phases, calculating the root mean square value, denoted by RMS, of the measured phase currents, measuring the unbalance current between the two sections, calculating the RMS value of the measured unbalance currents, and detecting the phase angle between the measured phase current and the measured unbalance current. | 12-12-2013 |
20130338946 | Method And Arrangement For Detecting An Internal Failure In H-Bridge Connected Capacitor Bank - A method for detecting an internal failure in a capacitor bank connected in one phase or more phases respectively to a power system. The capacitor bank includes a plurality of capacitor units. Each of the capacitor units includes a plurality of capacitor elements connected in parallel and/or series. The capacitor units are further divided into two strings and a current transformer is arranged in the midpoints of the two strings so that the capacitor units are further divided into four quadrants and the internal failure(s) may occur in one or more capacitor elements or units and involves one or more capacitor quadrants. The method includes initiating an alarm and/or a trip signal when the determined total number of internal elements failures exceeds a first or a second threshold value. | 12-19-2013 |
20140117912 | System For Detecting Internal Winding Faults Of A Synchronous Generator, Computer Program Product And Method - A system, method and computer program product for monitoring including detecting internal faults especially inter-turn faults of a synchronous generator and thus protecting the synchronous generator. The synchronous generator includes a winding for each phase of a power network, a terminal for each phase arranged on a terminal side of the synchronous generator, and connected to the respective winding, the terminals on the terminal side are connected to an electrical power network, and the synchronous generator is arranged to input power to the electrical power network by means of the terminals. | 05-01-2014 |
20140254053 | TRAVELLING-WAVE BASED FAULT PROTECTION OF HIGH-VOLTAGE TRANSMISSION LINES - An improved method of fault detection in a high-voltage direct current (HVDC) power transmission line is provided. The fault detection is based on fault-induced travelling waves. The method comprises estimating an amplitude of fault-induced travelling waves at the fault location, and calculating a fault resistance (R | 09-11-2014 |
Patent application number | Description | Published |
20130098104 | METHOD AND SYSTEM FOR CONDENSING WATER VAPOUR FROM A CARBON DIOXIDE RICH FLUE GAS - A gas cleaning system is operative for removing water vapour from a carbon dioxide rich flue gas generated in a boiler combusting a fuel in the presence of a gas containing oxygen gas. The gas cleaning system comprises a flue gas condenser ( | 04-25-2013 |
20130139738 | METHOD AND A DEVICE FOR CLEANING A CARBON DIOXIDE RICH FLUE GAS - A gas cleaning system ( | 06-06-2013 |
20130255919 | CONDENSER AND METHOD FOR HEAT RECOVERY AND COOLING - An apparatus and method to recover heat from and cool flue gases. As shown in FIG. | 10-03-2013 |
20130259786 | APPARATUS AND METHOD FOR THE REMOVAL OF NITROGEN DIOXIDE FROM A FLUE GAS STREAM - Disclosed herein is an apparatus comprising an absorption chamber; a flue gas stream inlet, the flue gas stream inlet being operative to dispose a flue gas stream in the absorption chamber, wherein the flue gas stream comprises nitrogen dioxide; an absorbing agent inlet, the absorbing agent inlet being operative to dispose an absorbent agent in the absorption chamber, the absorbing agent comprising an absorbing agent compound and a solvent, wherein the absorbing agent is chemically reactive with nitrogen dioxide to absorb nitrogen dioxide from the flue gas stream, forming a reaction product. | 10-03-2013 |
20130259788 | CONDENSER AND METHOD FOR CLEANING FLUE GASES - An apparatus and method to clean flue gases. As shown in FIG. | 10-03-2013 |
20140120002 | ARRANGEMENT OF A FLUE GAS TREATMENT SYSTEM AND A COMBUSTION DEVICE - An arrangement of a flue gas treatment system and a combustion device includes a recirculation line to supply at least a part of the flue gas from the combustion device back to the combustion device, a selective catalytic reduction unit (SCR), a gas processing unit (GPU) to separate CO | 05-01-2014 |
20140366549 | PREPARATION OF EXHAUST GAS FROM A GAS TURBINE FOR EXHAUST GAS RECIRCULATION - A method of operating a turbine unit, wherein recirculated exhaust gas is contacted with a cooling and absorption liquid in a packed bed. An exhaust gas treatment system for a turbine unit, wherein an exhaust gas recirculation line comprises a gas cooling and cleaning device having a packed bed for contacting the exhaust gas with a cooling and absorption liquid. A combined cycle power generating system, wherein an exhaust gas recirculation line comprises a gas cooling and cleaning device having a packed bed for contacting the exhaust gas from a gas turbine with a cooling and absorption liquid and wherein water utilized as a cooling medium for condensation of steam originating from a steam turbine, and the cooling and absorption liquid, are passed to a cooling tower. | 12-18-2014 |
20150089956 | METHOD OF EXHAUST GAS TREATMENT FOR A GAS TURBINE SYSTEM AND EXHAUST GAS TREATMENT ASSEMBLY - The invention relates to a method for operating a gas turbine system, wherein the gas turbine system includes a compressor, a combustor, a heat recovery steam generator, a scrubber, a direct contact cooler. The method includes introducing the scrubbing fluid discharged from the scrubber into the direct contact cooler, contacting the scrubbing fluid in the direct contact cooler with the exhaust gas discharged from the heat recovery steam generator in order to remove a portion of nitrogen oxide therefrom; feeding the exhaust gas discharged from the direct contact cooler into the compressor. With the technical solution of the present invention, nitrogen oxide in the exhaust gas is reduced to a certain extent by means of used scrubbing fluid from the scrubber. This solution may improve the efficiency in reduction of nitrogen oxide with a simple and feasible manner. | 04-02-2015 |
Patent application number | Description | Published |
20080200177 | Performance In Mobile Communications Systems - In third generation mobile communications networks, e.g. CDMA systems, a mobile station intending to access a base station transmits a request for access to a base station and waits for a response in the form of an indicator signal. Both detecting a signal as an acknowledgement message without one being sent from the base station and failing to detect such an acknowledgement message can give rise to noise and interference in the whole cell. The invention provides a method and a user equipment for determining the received signal strength in an access slot in a downlink channel and for asserting whether detection of an indicator signal from the base station in the access slot in the downlink channel is reliable. Hereby, a more secure reception of indicator signals can be obtained, which leads to reduced interference and noise in the whole cell. | 08-21-2008 |
20080205556 | Selecting Delay Values For a Rake Receiver - Multipath components of transmitted data symbols are received with individual delays and processed by a RAKE unit having a number of fingers. A delay profile is calculated, and delay values for peaks detected therein are determined. A number of peak delay values (PA | 08-28-2008 |
20090069042 | Outer Loop Transmit Power Control in Wireless Communication Systems - Outer-loop power control methods and apparatus are disclosed. In an exemplary embodiment, a short-term block error rate is measured for a received signal, and a coarse adjustment to a target signal-to-interference ratio (SIR) is calculated as a function of the short-term block error rate, a target block error rate, and a first loop tuning parameter. In some embodiments, a fine adjustment to the target SIR is also calculated, as a function of a smoothed block error rate, the target block error rate, and a second loop tuning parameter. The coarse adjustment provides quick responsiveness to received block errors, while the fine adjustment moderates the coarse adjustments by accounting for a longer-term view of the received block error rate. The target SIR adjustments disclosed herein may be computed in each of several iterations of an outer-loop power control loop. | 03-12-2009 |
20090254792 | HYBRID DECODING USING MULTIPLE TURBO DECODERS IN PARALLEL - A method and receiver for Turbo decoding a received Turbo encoded bitstream with a first channel decoder which uses a first Turbo decoding algorithm to produce a first decoded bitstream and a first error measure, and a second channel decoder which uses a second Turbo decoding algorithm to produce a second decoded bitstream and a second error measure. The decoders are operable in parallel. A selector is arranged to select, for further processing in the receiver, the decoded bitstream and the error measure from the decoder which has the most favorable error measure. | 10-08-2009 |
20100039972 | Controlling a Power Level in a Wireless Communications System with Different Scrambling Codes - A power level of signals transmitted in a wireless communications system under a first or a second scrambling code, is controlled in an inner power control loop, where a quality measure is repetitively estimated and control commands generated from the quality measure and a quality measure reference value, which in an outer power control loop is adjusted in dependence on a performance level calculated for signals received during a time interval. A first value is adjusted in dependence on a performance level for time intervals with all signals transmitted under the first scrambling code and used during such time intervals. A second value is adjusted in dependence on a performance level for time intervals with at least some signals transmitted under the second scrambling code and used during at least a part of such time intervals. | 02-18-2010 |
20100159862 | Method and Apparatus for Frequency Control in Wireless Communications - The automatic frequency correction value applied by a receiver is altered to minimize long-term drift of a path delay profile. In one embodiment, the phase or timing error resulting from constant frequency corrections is accumulated, and an estimated frequency correction value is selectively quantized into an actual frequency correction value in response to the accumulated phase/timing error. The quantized value above or below the estimate is selected to minimize the accumulated phase/timing error that gives rise to path delay profile drift. In another embodiment, a timing circuit measures the instantaneous path delay profile drift incurred with each frequency correction, and integrates the instantaneous drift measurements over time to yield a path delay profile drift. The drift (or its rate of change) is then used to adjust a frequency correction value so as to minimize the drift. | 06-24-2010 |
20110188440 | Method for Multimedia Broadcast and Multicast Service, MBMS, Notification Indicatator Detection,Computer Program, and User Equipment Apparatus - A method for multimedia broadcast and multicast service, MBMS, notification indicator detection from multiple MBMS notification-indication channel, MICH, frames in a User Equipment operating in a Wideband Code Division Multiple Access system is disclosed. The method comprises determining a desired number of MICH frames; upon connection with a NodeB, receiving an available number of MICH frames within a modification period; decoding notification indications of the received MICH frames; determining a majority value being the number of notification indications having a most frequent value of the decoded notification indications; and if a ratio between the majority value and the desired number of MICH frames is above a threshold value, determining the correct notification indicator to be the most frequent value, or if the ratio between the majority value and the desired number of MICH frames is less than the threshold value, connecting to the NodeB; receiving further MICH frames; and decoding notification indications of the received MICH frames such that the correct notification indicator is achieved. A computer program and a User Equipment apparatus are also disclosed. | 08-04-2011 |
20120302279 | Outer Loop Transmit Power Control in Wireless Communication Systems - Outer-loop power control methods and apparatus are disclosed. In an exemplary embodiment, a short-term block error rate is measured for a received signal, and a coarse adjustment to a target signal-to-interference ratio (SIR) is calculated as a function of the short-term block error rate, a target block error rate, and a first loop tuning parameter. In some embodiments, a fine adjustment to the target SIR is also calculated, as a function of a smoothed block error rate, the target block error rate, and a second loop tuning parameter. The coarse adjustment provides quick responsiveness to received block errors, while the fine adjustment moderates the coarse adjustments by accounting for a longer-term view of the received block error rate. The target SIR adjustments disclosed herein may be computed in each of several iterations of an outer-loop power control loop. | 11-29-2012 |
20150208338 | Network Node and Methods for Selecting Access Node for Communications in Wireless Communication Networks. - A method in a network node | 07-23-2015 |
20150223171 | Method and Device for Increasing Performance in a Radio Communication System - The present invention relates to a method and a device for increasing performance in a radio communication system ( | 08-06-2015 |
Patent application number | Description | Published |
20140320459 | OPTICAL TOUCH SCREENS - A lens for placement opposite a diode in an optical touch sensor, including an upper portion including an upper refractive surface located nearer to the diode, and an upper reflector located further from the diode, the upper reflector being curved in two dimensions and cut horizontally by a top horizontal plane of the lens, and a lower portion, coplanar with the diode, including a lower refractive surface located nearer to the diode, and a lower reflector located further from the diode, the lower reflector being curved in the two dimensions and cut horizontally by a bottom horizontal plane of the lens, wherein the upper and the lower reflector are symmetrical and vertically aligned, and wherein non-collimated light reflected by the lower reflector onto the upper reflector is partially collimated in the two dimensions by the lower reflector and further collimated in the two dimensions by the upper reflector. | 10-30-2014 |
20150261339 | OPTICAL TOUCH SCREENS - A lens for placement opposite a diode in an optical touch sensor, including an upper portion including an upper refractive surface located nearer to the diode, and an upper reflector located further from the diode, the upper reflector being curved in two dimensions and cut horizontally by a top horizontal plane of the lens, and a lower portion, coplanar with the diode, including a lower refractive surface located nearer to the diode, and a lower reflector located further from the diode, the lower reflector being curved in the two dimensions and cut horizontally by a bottom horizontal plane of the lens, wherein the upper and the lower reflector are symmetrical and vertically aligned, and wherein non-collimated light reflected by the lower reflector onto the upper reflector is partially collimated in the two dimensions by the lower reflector and further collimated in the two dimensions by the upper reflector. | 09-17-2015 |