Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Noise, distortion, or unwanted signal detection (e.g., quality control, etc.)

Subclass of:

455 - Telecommunications

455039000 - TRANSMITTER AND RECEIVER AT SEPARATE STATIONS

455670110 - Having measuring, testing, or monitoring of system or part

Patent class list (only not empty are listed)

Deeper subclasses:

Entries
DocumentTitleDate
20130029610DETERMINATION PROGRAM, DETERMINATION DEVICE, AND DETERMINATION METHOD - A determination device 01-31-2013
20090305642RADIO COMMUNICATION APPARATUS AND FREQUENCY OFFSET CALCULATION METHOD - In a radio communication apparatus, a frequency offset calculator of the radio communication apparatus calculates a frequency offset of the received radio signal from the reception frequency of the radio communication apparatus. An averaging unit averages the frequency offset calculated by the frequency offset calculator. A moving speed calculator calculates the moving speed of an associated radio communication apparatus with which the radio communication apparatus is communicating, based on the frequency offset calculated by the frequency offset calculator. An averaging time changer changes an averaging time for which the frequency offset is averaged by the averaging unit, in accordance with the moving speed of the associated radio communication apparatus calculated by the moving speed calculator.12-10-2009
20120171966System and Method for Wideband Wireless System Scanning - A system and method for determining the presence of interfering signals in a wireless environment. A programmable RF card is programmed to collect a wideband signal based upon user requested signals of interest. Collected signals are analyzed and the presence of specific interfering signals is determined. The interfering signals are then tracked and reported.07-05-2012
20130045693METHOD AND APPARATUS FOR TRIGGERING MEASUREMENT REPORTING BASED UPON NEIGHBOR CELL INTERFERENCE - A method, apparatus and computer program product are provided for triggering a measurement report from a mobile terminal, such as a mobile terminal is in the CELL_FACH state, to a network entity in an instance in which the mobile terminal may be creating neighbor cell interference. Based upon the measurement report, the serving cell may modify the operation of the mobile terminal in order to reduce the potential for neighbor cell interference. In this regard, a method is provided that includes determining two or more parameters indicative of neighbor cell interference. In instance in which the parameters satisfy respective thresholds, the method also causes a measurement report including an indication of at least one of the parameters to be provided to a network element.02-21-2013
20100048143Method and Device for Measuring Phase Noise - A method and a device for measuring the phase noise of a signal registers the measurement signal (V) with a given measurement frequency (f02-25-2010
20100075612Advertising desired range in a wireless network - In various embodiments, a network device may transmit its desired proximity range in the form of a proximity information element (IE) in a beacon or a request frame. The IE may contain threshold values for a Receive Channel Power Indicator (RCPI) and a Receive Signal to Noise Indicator (RSNI). Only devices that receive the beacon or request frame with measured signal values at least as great as the RCPI and RSNI values will respond. Devices that receive the beacon or request frame with measured values less than the RCPI and/or the RSNI should not respond, thus reducing the volume of communications on the network at that time.03-25-2010
20100041340APPARATUS AND METHOD FOR POWER CONTROL IN MOBILE COMMUNICATION SYSTEM - An apparatus and method for flexibly changing a fixed target SIR, a fixed target SIR step size, and a time to perform a TX power control request, in order to prevent a receiver apparatus from performing an excessive TX power control request upon a sudden RX channel environment change in a mobile communication system. The apparatus includes a target Signal-to-Interference Ratio (SIR) determiner for flexibly changing a fixed target SIR upon a sudden target SIR re-decrease, after a previous increase, by decreasing a target SIR by a large step size at an initial stage of a sudden target SIR increase and decreasing the target SIR down-step size with an approach to a normal target SIR.02-18-2010
20100330925Method and Apparatus to Improve Closed Loop Transmit Diversity Modes Performance via Interference Suppression in a WCDMA Network Equipped with a Rake Receiver - A system and method for processing signals in a wireless communication system is disclosed. The method may include transmitting a wireless signal from a transmitter, and receiving at the transmitter, feedback information from a receiver that receives the transmitted wireless signal. The received feedback information may include one or more of a plurality of weight values corresponding to a maximum signal-to-interference-plus-noise ratio (SINR) value that is determined from a plurality of SINR values. The receiver may generate the plurality of SINR values from the received transmitted wireless signal based on the corresponding plurality of weight values. The feedback information that includes the one or more of the plurality of weight values may be received by the transmitter via one or more uplink communication channels. The at least one uplink communication channel may include a high-speed dedicated physical control channel (HS-DPCCH).12-30-2010
20100093287CHANNEL QUALITY INFORMATION REPORTING METHOD, BASE STATION, AND USER EQUIPMENT - A channel quality information reporting method of reporting channel quality information from user equipment to a base station is disclosed. The channel quality information reporting method includes a format determination step in which the base station determines a channel quality information format based on information of the user equipment, a format transmission step in which the base station transmits the determined channel quality information format to the user equipment, and a channel quality information generation step in which the user equipment generates the channel quality information based on the received channel quality information format.04-15-2010
20090124209METHODS AND SYSTEM FOR CONFIGURATION OF BROADBAND OVER POWER LINES - Disclosed embodiments provide methods and systems for the configuration of broadband over power lines. The configuration entails calculating a desired distance between nodes by measuring a noise floor on a power line, measuring a signal power level on the power line and determining the desired distance based on a target signal-to-noise ratio.05-14-2009
20090270044ESTIMATING STATISTICAL PROPERTIES OF NOISE IN MODULATED DATA CARRIER SIGNALS - Methods, systems and apparatus for estimating statistical properties of noise in modulated data carrier signals represented by modulated data symbols are disclosed. The method comprises generating an instantaneous estimate of the statistical property of noise from the received modulated data symbols on a sample by sample basis and applying a compensation function to the instantaneous estimate. The method further comprises averaging an output of the compensation function to determine the estimated statistical property of noise.10-29-2009
20130065537METHOD AND SYSTEM FOR WIRELESS COMMUNICATION CHANNEL ESTIMATION - A method and system for selecting an algorithm for channel estimation in a wireless communication system are disclosed. According a parameter indicative of an accuracy of a channel estimation algorithm is determined. A selection between a first channel estimation algorithm and a second channel estimation algorithm is made based on the determined parameter.03-14-2013
20110021157Radio Communication System, Radio Communication Device, and Radio Communication Method - One of objects of the present invention is to enhance stability of radio communication by switching between ARQ and HARQ according to whether or not signal quality of received data is deteriorated, such that efficiently perform error correction, when an error is detected in the received data. In a radio communication device (e.g., a PHS terminal 01-27-2011
20110021156MARGIN DESIGN APPARATUS, MARGIN DESIGN SYSTEM, MARGIN DESIGN METHOD, AND PROGRAM - Provided is a technique of calculating a proper margin according to the area or a radio propagation estimation method in the area design of wireless communication using a radio propagation simulator. From a storage part wherein information relating to positions where deterioration of a communication quality or a radio quality is confirmed and information relating to the radio conditions at the positions are associated with each other, a margin design system extracts positions where the radio conditions are equal, estimates the radio quality at the positions by the radio propagation simulator, and calculates the margin of a radio quality estimated value on the basis of the estimated radio quality.01-27-2011
20110021155FREQUENCY CONTROL DEVICE, FREQUENCY CONTROL METHOD, BASE STATION APPARATUS, AND MOBILE STATION APPARATUS - There is provided a frequency control device that includes a frequency synchronizer to transform a radio signal to a baseband signal, a same signal correlator to obtain a first correlation value between a first signal in a first position in a first transmission symbol of the baseband signal and a second signal included in a second period, a different symbol correlator to obtain a second correlation value between a third signal included in a third period of the first transmission symbol and a fourth signal included in a fourth period, a frequency error estimator to estimate a frequency error added on the radio signal based on a phase rotation value of a difference value obtained by a subtraction of the second correlation value from the first correlation value, and a frequency corrector to correct the baseband signal to cancel the frequency error.01-27-2011
20090233557WIRELESS COMMUNICATIONS APPARATUS - Determining a beamforming vector for a multi-antenna transmitter commences by determining an eigen-beamformer vector from the channel matrix and, for a number of iterations commencing with the eigen-beamformer vector, rotating the vector into a reference direction in vector space such that application of the rotated vector would result in peak radiation being directed in said reference direction, sampling a radiation pattern associated with the rotated eigen-beamformer vector with respect to transmission direction, compressing resultant samples to reduce spatial directivity induced by the vector, developing a rotated candidate beamformer on the basis of said compressed samples and returning said rotated candidate beamformer to the orientation of said vector before said rotating and storing said resultant vector as a candidate vector. Then, the candidate vectors are compared for the iterations and one is selected for use which best meets one or more selection criteria.09-17-2009
20130165054METHOD AND APPARATUS FOR MEASURING INTERFERENCE IN WIRELESS STATIONS - A method for use in a station of measuring radio frequency (RF) interference is presented. An average noise power indicator of the STA (STA_ANPI) is determined. A rate of change of the STA_ANPI is monitored to determine an RF interference metric. The RF interference metric is transmitted to another network entity, whereby the another network entity is enabled to perform load balancing based on the RF interference metric.06-27-2013
20080311856Method and Apparatus for Power Control of an Air Interface Transmission - An apparatus (12-18-2008
20110143681Radio Channel Control Method And Receiving Apparatus - A radio channel control method for controlling, in a radio communication system having a transmitter and a receiver, a radio channel from the transmitter toward the receiver. The method includes receiving a signal transmitted from the transmitter by the receiver, measuring reception quality of the signal, generating information which indicates increment or decrement of the reception quality, and controlling a modulation or coding for the radio channel based on the information.06-16-2011
20120108180RADIO BASE STATION AND COMMUNICATION CONTROL METHOD - For each resource block assigned to radio terminal (05-03-2012
20120108179COEXISTENCE OF HETEROGENEOUS SECONDARY NETWORKS - Method, apparatus, and computer program product embodiments are disclosed to provide for wireless resource sharing between heterogeneous wireless networks to enable coexistence in a TV band white space. An example embodiment of the invention includes a method, comprising the steps of: identifying a potential neighboring wireless network to a wireless network based on information exchanged with a network controller serving the potential neighboring wireless network; and sending a reporting interferer request to the network controller serving the potential neighboring wireless network in response to determining that the potential neighboring wireless network is an interferer network to the wireless network.05-03-2012
20120190308TRANSCEIVER WITH PLURAL SPACE HOPPING PHASED ARRAY ANTENNAS AND METHODS FOR USE THEREWITH - A wireless transceiver includes an antenna array that transmits an outbound RF signal containing outbound data to remote transceivers and that receives an inbound RF signal containing inbound data from the remote RF transceivers, wherein the antenna array is configurable based on a control signal. An antenna configuration controller generates the control signal to configure the antenna array to hop among a plurality of radiation patterns based on a hopping sequence. An RF transceiver section generates the outbound RF signal based on the outbound data and that generates the inbound data based on the inbound RF signal. In one configuration, a switching section selectively couples a selected one of the antennas in the array to the RF transceiver section, based on the control signal. In another configuration, the RF transceiver section includes an RF section for each antenna in the array.07-26-2012
20090239474SIMPLIFIED IMPAIRMENTS MATRIX CALCULATION FOR SINR ESTIMATION - A recursive method of calculating an inverse impairments matrix is used to generate an SINR estimate, which in turn is used to generate a CQI estimate. The recursive inverse impairments matrix calculation avoids the need to perform a computationally intensive matrix inversion, allowing for faster CQI estimate generation and consuming less power.09-24-2009
20090149133COMMUNICATION APPARATUS AND PROGRAM FOR IDENTIFYING FAULTS AND COMPUTER PROGRAM STORAGE MEDIUM - A communication apparatus that identifies a fault of a radio link between a radio terminal and a radio base station includes according to an aspect of the present invention: a statistical information acquisition unit configured to acquire statistical information indicating a state of the radio link between the radio terminal and the radio base station from at least one of the radio terminal and the radio base station; and a fault identification unit configured to identify a fault of the radio link based on an acquired statistical information from among a plurality of faults associated with a plurality of statistical information beforehand.06-11-2009
20110263211Apparatus and Method for Frequency-Selective Occupancy Detection - An apparatus for frequency-selective occupancy detection of a channel in a frequency band includes a detector for detecting a receive spectrum in the frequency band, a provider for providing node frequencies, a determiner for determining node level values, a determiner for determining the threshold curve and a comparer. The provider provides the node frequencies for a threshold curve with respect to a noise floor in the frequency band. The determiner determines the node level values at the node frequencies based on receive level values of the receive spectrum. The determiner determines the threshold curve in the frequency band based on the provided node frequencies and the node level values at the node frequencies. The comparer compares a current power of the receive level values in the channel with a reference power in the channel predetermined by the threshold curve to detect occupancy or non-occupancy of the channel depending on the comparison.10-27-2011
20090291643METHOD AND SYSTEM FOR MEASURING NOISE SIGNAL - A method and system for measuring noise signals are provided. The method includes configuring a receiving band of a wireless network signal receiving device and enlarging a receiving range of the wireless network signal receiving device to the maximum; sampling and/or analyzing signals received so as to obtain noise signal data, so as to debug and improve a wireless network equipment without a detecting device.11-26-2009
20090291642Systems and Methods for SIR Estimation for Power Control - Systems and methods according to these exemplary embodiments provide for methods and systems for improving the signal-to-interference-plus-noise ratio (SIR) estimation between a mobile communications device and a base station (BS) for improving power control. A first SIR estimate is generated based on signals received on at least a first channel and a second SIR estimate is generated based on signals received on a second channel. A correction factor for the second SIR estimate is generated based on at least the first SIR estimate, and the second SIR estimate is adjusted with the correction factor. The first SIR estimate can, optionally, be generated using channel coefficients generated from signals received on both the first channel and the second channel.11-26-2009
20080305747Methods, systems, and computer-readable media for measuring service quality via mobile handsets - Methods, systems and computer-readable media are provided for measuring service quality of wireless communications systems, including automatically detecting, reporting and assessing problems in wireless communications systems. The location measurement capability of a wireless terminal is leveraged to note the position of the wireless terminal when measuring service quality and when service problems are encountered. Descriptive information associated with a service quality is collected and stored and subsequently transmitted to a central processor at a later time along with location information. This information enables service quality maps to be constructed and continuously updated without negatively impacting a wireless communications system. A user of a wireless terminal may be provided the opportunity to provide feedback that is subsequently transmitted to the central processor and used in analyzing and rectifying problems.12-11-2008
20120142276METHOD AND APPARATUS FOR DATA AIDED CHANNEL QUALITY ESTIMATION - Methods and apparatuses for data aided channel quality estimation using both pilot and data information are disclosed herein. In one exemplary aspect, a method for estimating channel quality in a wireless communication system is disclosed. The method comprises estimating a pilot noise variance based on a pilot signal received from a base station on a downlink and estimating a data noise variance based on a data signal received from the base station on the downlink. The method also comprises combining the pilot noise variance and the data noise variance to obtain a combined noise variance, and estimating the channel quality based on the combined noise variance.06-07-2012
20090163144Communication Device, Terminal Device, And Method Of Managing Radio Channel Quality - A monitoring unit monitors a quality of a radio channel established between a master station and a terminal device. An identification unit identifies attribute information representing an attribute of the terminal device or an attribute of a connection designated in a communication between the master station and the terminal device. On the basis of both a result of monitoring the quality of the radio channel by the monitoring unit and a result of identifying the attribute information by the identification unit, a control unit determines a reporting cycle in which management information is cyclically reported to a communication partner in order to manage the quality of the radio channel.06-25-2009
20090258601TRANSMISSION METHOD WITH TRANSMISSION POWER CONTROL - A transmission method is provided, whereby a first wireless device transmits an RF signal to a second wireless device using desired transmission power. First, the RF signal to be transmitted is provided. First parameters of the first wireless device are detected, as well as the second parameters of the second wireless device. Transmission power of the RF signal is then determined based on the first and second parameters, and the RF signal is accordingly amplified and output for transmission. Specifically, the second parameters may comprise an algorithm for decoding, and a number of receivers are in the second wireless device.10-15-2009
20090054002Radio terminal device, management terminal device, and radio communication method - Management terminal apparatus, wireless terminal apparatus, and a wireless communication method that reduces interference and improves communication quality under a communication environment where a plurality of wireless communication schemes are mixed. At management terminal apparatus (02-26-2009
20090325506Method For Controlling Communication in Wireless Terminal and Wireless Terminal - An UE receives a downlink data channel from a BS, calculates a reception quality value related to the downlink data channel, monitors a transmission rate of an uplink data channel to BS, and reduces the calculated reception quality value based on a result of the monitoring.12-31-2009
20090325505Communication apparatus and communication method - A mobile communication system in which a mobile station apparatus transmits reception quality information to a base station apparatus, the reception quality information indicating quality of a signal received from the base station apparatus, characterized in that the base station apparatus transmits information for instructing transmission of reception quality information without uplink data included in an uplink data transmission permission signal, and the mobile station apparatus transmits reception quality information without uplink data according to the information for instructing transmission of reception quality information without uplink data. This allows a mobile station apparatus to transmit reception quality information including a large amount of information even if there is no uplink data between the mobile station apparatus and the base station apparatus, and the transmission control flexibly responding to the amount of information and the frequency of transmissions of the reception quality information transmitted from the mobile station apparatus is possible. Therefore, more efficient communication control (scheduling) between the base station apparatus and the mobile station apparatus can be achieved.12-31-2009
20090191817Adaptive transmission of resource utilization messages based on throughput - An adaptive scheme controls the transmission of interference management messages by wireless nodes. For example, the adaptive scheme may be used to determine whether and/or how to transmit resource utilization messages. Such a determination may be based on, for example, comparison of a quality of service threshold with a current quality of service level associated with received data. A quality of service threshold may be adapted based on the effect of previously transmitted resource utilization messages. A quality of service threshold for a given wireless node may be adapted based on the frequency at which the wireless node transmits resource utilization messages. A quality of service threshold for a given wireless node may be adapted based on information received from another wireless node. An adaptation scheme also may depend on the type of traffic received by a given wireless node. A quality of service threshold also may be adapted based on throughput information.07-30-2009
20090203322ASYNCHRONOUS INTERFERENCE MANAGEMENT - Interference management may involve the transmission of interference management messages by wireless nodes that are experiencing interference and appropriate responses by potential interferers that receive the interference management messages. Upon detection of interfering signals, a wireless node may determine whether the signals are from a synchronous interferer or an asynchronous interferer. Based on this determination, the wireless node may use different types of signals to manage the different types of interference. In some aspects, asynchronous interference management may involve backing-off in frequency and/or in time in response to interference signals. Asynchronous interference management may involve transmitting back-off beacons to clear potential interferers from a given carrier. Here, the transmission of beacons by a wireless node may be metered to facilitate fair sharing of communication resources.08-13-2009
20080274702Method and Device for Measuring Radio Interference Levels With Frequency Tracking - The invention relates to a method for measuring radio interference levels in a specific frequency range. Said method consists in adjusting the frequency range by means of a pre-measurement; respectively detecting, for each measuring frequency one measuring level of the signal which is to be measured; comparing the measured measuring level to the threshold value, characterised in that when the threshold value of the measuring level is exceeded, the measured level is compared to the respective measuring frequency as a radio interference level; and measuring, in a post-measurement phase, each characterised radio interference level in a more precise manner and in relation to the runtime performance thereof. The average frequency of the measuring frequency range of post-measurement, which is repeated in an alternating cyclic manner in relation to the post-measurement, is tracked in relation to the average frequency of the variable radio interference level which was recently determined in previous pre-measurement, for each characterised radio interference level.11-06-2008
20090221239WEIGHTED OPEN LOOP POWER CONTROL TRANSMITTER - A weighted open loop power control transmitter for controlling transmission power levels using a spread spectrum time division duplex (TDD) technique having frames with timeslots for communication includes a demodulator configured to receive a transmitted signal from the receiver, a channel estimation device, a data estimation device, and a weighted open loop power controller. The weighted open loop power controller includes a power measurement device, a pathloss estimation device configured to receive an interpreted power level from the data estimation device and estimate the pathloss and update a long term average of the pathloss, a quality measurement device, and a transmit power calculation device for determining the transmitter's power level and to control the receiver's amplifier.09-03-2009
20100015926SYSTEM AND METHODS TO MONITOR AND ANALYZE EVENTS ON WIRELESS DEVICES TO PREDICT WIRELESS NETWORK RESOURCE USAGE - System and methods to monitor and analyze events on a wireless device to predict wireless network usage are described. An example method to predict the use of wireless network resources from usage data of wireless devices when executed receives data related to a user interaction with a wireless device in an offline mode, analyzes the received data to predict wireless network resource usage of the wireless device, and outputs information associated with the analyzed data to enable allocation of wireless network resources.01-21-2010
20100261433Radio Communication Device, Program, Radio Communication Method, and Radio Communication System - Provided is a radio communication device including a reception unit that receives a radio signal, a measurement unit that measures a field intensity of the radio signal received by the reception unit, a determination unit that determines whether the radio signal received by the reception unit satisfies a predetermined condition for a noise component, and an estimation unit that estimates a distance from a transmission source device of the radio signal based on the field intensity of the radio signal determined by the determination unit to satisfy the predetermined condition.10-14-2010
20090017768FREQUENCY ERROR ESTIMATION AND CORRECTION - Counter-clockwise and clockwise quadrant transitions are detected and accumulated with respect to a received complex signal over a certain time period. These transitions may then be compared in order to obtain information indicative of both a magnitude and phase of a carrier frequency error for the received signal. Additionally, zero-crossings of the received complex signal over the same certain time period are detected and accumulated. The accumulated crossings provide information indicative of frequency offset magnitude. The determined magnitude and phase of the frequency error may then be used to adjust a local oscillator frequency to provide for improved receiver performance.01-15-2009
20090017767COMMUNICATION SYSTEM, INFORMATION PROCESSING APPARATUS, AND COMMUNICATION CONTROL METHOD - This invention is characterized by a communication system comprising a station with a diversity function and an access point. The station notifies the access point that the station is in a power saving mode during antenna evaluation and, when the antenna evaluation is complete, notifies the access point of the end of the power saving mode. When recognizing that the station is in the power saving mode, the access point stops transmitting the data packet. Thus, the situation in which when a diversity function executes an antenna evaluation process, repetition of retransmission of a data packet, thereby disconnecting communication, is avoided.01-15-2009
20080214119Link adaptation telecommunication system - The invention relates to a wireless telecommunication system including a transmitter and a receiver, said transmitter being used to transmit data packets to the receiver, said receiver including error detection means (09-04-2008
20100227566COMMUNICATION SYSTEM AND METHOD OF PERFORMING INTERFERENCE CONTROL USING RANDOM BEAMFORMING TECHNIQUE - Provided is a communication system using various types of random beamforming technologies. Each of terminals that belong to a user group may generate a decoding matrix, based on interference caused by a neighboring base station of a serving base station. Each of the terminals may transmit, to the serving base station or the neighboring base station, information associated with a signal-to-interference plus noise ratio (SINR) or throughput based on the decoding matrix. The serving base station may select, from the terminals, at least one target terminal to communicate with the serving base station.09-09-2010
20100233968METHOD FOR GENERATING AND TRANSMITTING CHANNEL QUALITY INDICATOR BASED ON ADJACENT BAND SELECTION SCHEME - A method of generating and transmitting a channel quality indicator is disclosed, by which a feedback size of channel quality information is reduced. The present invention includes selecting at least one subband by considering a channel quality of each of entire subbands formed by grouping a predetermined number of subcarriers, additionally selecting subbands adjacent to the at least one subband selected in the first selection step, and generating the channel quality indicator corresponding to the subbands selected in the first selection step and the second selection step.09-16-2010
20090075598WIRELESS COMMUNICATION METHOD AND APPARATUS FOR ADAPTIVELY BIASING CHANNEL QUALITY INDICATORS TO MAINTAIN A DESIRED BLOCK ERROR RATE - A method and apparatus for adaptively biasing a channel quality indicator (CQI) used for setting a configuration of communication between a transmitter and a receiver in a wireless communication system. The receiver sends a CQI and positive acknowledgement (ACK)/negative acknowledgement (NACK) messages to the transmitter. The ACK/NACK messages indicate the absence or presence of error, respectively, in a transmitted data packet. The CQI is derived from the signal-to-interference ratio (SIR) and the ACK/NACK messages. The transmitter calculates the block error rate (BLER) of the transmitted data packets based upon the ACK/NACK messages sent from the receiver. The transmitter compares the BLER of the transmitted data packets to a target BLER and biases the CQI based on the comparison in order to achieve the target BLER.03-19-2009
20100087154Adjustments of IUB Load Measurements - A method may include determining whether a discrepancy exists between scheduling headroom computable by a first device and scheduling headroom computable by a second device, determining one or more load measurements that the second device bases its computation of the scheduling headroom if it is determined that the discrepancy exists, modifying the one or more load measurements, and calculating the scheduling headroom based on the modified one or more load measurements.04-08-2010
20100197241METHODS AND SYSTEMS FOR LOW-COMPLEXITY CHANNEL ESTIMATOR IN OFDM / OFDMA SYSTEMS - The present disclosure proposes a method for channel estimation with excellent accuracy for a large variety of channel conditions and with low computational complexity. The method represents a specific combination of a plurality of linear channel estimation schemes. A resulting hybrid channel estimator may retain the low complexity of the constituent estimators while performing same or better than each of the constituent estimators. The proposed simplified hybrid estimator may provide very close error rate performance to the optimal Wiener estimator over a wide range of channel scenarios.08-05-2010
20090275290MOBILE COMMUNICATION TERMINAL AND METHOD OF ACCOMPLISHING TPC IN MOBILE COMMUNICATION TERMINAL - The mobile communication terminal includes a first unit which measures a SIR of a signal received from a base station, a second unit which determines a target SIR, and a third unit which compares the SIR measured by the first unit to the target SIR, and produces TPC data in accordance with the result of the comparison, the TPC data being used for controlling signal-transmission power by which the base station transmits a signal to the mobile communication terminal, the TPC data being transmitted to the base station together with a signal to be transmitted to the base station from the mobile communication terminal. The second unit lowers the target SIR if a signal for calling is not received from the base station by a predetermined period of time, and further if communication quality between the mobile communication terminal and the base station is equal to or greater than threshold quality.11-05-2009
20090280749RADIO COMMUNICATION APPARATUS AND METHOD - In a radio communication system, a downlink frequency band includes a plurality of frequency blocks including one or more carrier frequencies, and one or more frequency blocks are used for data transmission to a single user. A radio communication apparatus for use in the communication system has an evaluation unit evaluating the quality of a received signal for each frequency block and storing plurality of stored quality evaluations of the received signal, a comparison unit comparing the plural quality evaluations of the received signal, and a transmission unit transmitting a predetermined number of the quality evaluations of the received signal over an uplink control channel.11-12-2009
20090239475METHOD AND SYSTEM FOR DETECTION OF PASSIVE INTERMODULATION INTERFERENCE EMISSIONS - A method and system for detecting intermodulation emissions, such as passive intermodulation emissions, is provided. The method comprises retrieving signal quality measurement (SQM) data, and determining whether there is an intermodulation hit in the SQM data. If there is no intermodulation hit, the SQM data is stored in a first data set; if there is an intermodulation hit, the SQM data is stored in a second data set. The method then determines whether there are one or more faults in the first data set. If there are, a confirmation count for an intermodulation failure is cleared, and the method starts again. If there are not one or more faults in the first data set, a determination is made whether there are one or more faults in the second data set. If not, the confirmation count is cleared, and the method starts again. An intermodulation failure can be confirmed if there are one or more faults in the second data set.09-24-2009
20090221238TRANSMITTING APPARATUS AND TRANSMITTING METHOD OF BASE STATION, AND RECEIVING APPARATUS AND COMMUNICATION METHOD OF UE IN MOBILE COMMUNICATION SYSTEM - A receiving apparatus of a UE transmits at least one channel information among a plurality of channel information to a transmitting apparatus of a base station according to an adaptive transmission method set for a received signal. In addition, the receiving apparatus transmits channel state information generated on the basis of the plurality of channel information to the transmitting apparatus with a relatively long interval. The transmitting apparatus transmits traffic data to the transmitting apparatus by using the received channel state information and at least one of channel information and one of a plurality of adaptive transmission methods. Accordingly, the amount of channel information transmitted to the transmitting apparatus can be modified in accordance with an adaptive transmission method set for a received signal, thereby minimizing the amount of channel information fed back from the receiving apparatus and increasing system capacity.09-03-2009
20080268788Tool and Method for Planning and/or Dimensioning Satellite Telecommunications Through a Quality Indicator - Method for planning and/or dimensioning links between several stations in a wireless telecommunication system including the following steps: 10-30-2008
20090111385APPARATUS FOR DETERMINING INTERFERENCE USING CYCLIC PREFIX AND METHOD THEREOF - An interference determination apparatus, including a signal receiver to receive a first signal of a primary network and a second signal of a secondary network; a correlator to compute a correlation value of a first cyclic prefix included in the first signal and a correlation value of a second cyclic prefix included in the second signal; and an interference determination unit to determine an interference level or whether the interference occurs between the primary network and the secondary network, using the correlation value of the first cyclic prefix and the correlation value of the second cyclic prefix.04-30-2009
20130012138METHOD FOR IMPROVING ROBUSTNESS OF SPECTRUM SENSING IN PRESENCE OF BURSTY INTERFERENCE - A method of wireless communication in white space includes spectrum sensing in the white space during each of multiple sensing intervals. The method also includes determining whether each of the sensing intervals is subject to interference. The determining process may be based on a time domain analysis or a frequency domain analysis of signal power during each sensing interval.01-10-2013
20100311350CONTINUOUS SEQUENTIAL SCATTERER ESTIMATION - The present invention uses newly received signal samples to update previously determined scatterer parameters, and therefore, reduces the processing effort required for characterizing scattering objects in a wireless channel. Broadly, the present invention determines a first set of scatterer parameters based on signal samples derived from signals received during one or more previous time intervals, and determines an updated set of scatterer parameters for a subsequent time interval based on the first set of scatterer parameters and the new signal samples. In one exemplary embodiment, the receiver uses a continuous sequential update process, e.g., a per-symbol-period inverse Prony process, to update the scatterer parameters. In another exemplar embodiment, the receiver uses an integrated Doppler approach to update the scatterer parameters.12-09-2010
20100233967METHOD FOR APPLYING AMPLITUTE USE TO DIGITAL AMPLYFIER WITH VARIABLE BIT RESOLUTION OR CLOCK FREQUENCY AND APPARATUS FOR EXECUTING THE METHOD - Disclosed is an adaptive modulation scheme and apparatus thereof using an Analog/Digital (AJO) converter with variable bit resolution or clock frequency, the A/D converter including a transmitter including a modulator to modulate data to be transmitted according to a modulation scheme received from a receiver, an A/D converter to convert the modulated data into an analog signal using a bit resolution or a clock frequency received from the receiver, and a radio frequency (RF) processor to transmit the analog signal to the receiver through a wireless channel and a receiver including an RF processor to receive data through a wireless channel, a calculator to calculate a Signal to Noise Ratio (SNR) of the data received through the RF processor, and a modulation controller to search a predetermined setting table for a corresponding modulation scheme and bit resolution using the calculated SNR and to transmit to a transmitter.09-16-2010
20120244818Over-the-air test - A testing system comprises a noise source coupled to at least two antenna elements. The noise source forms a total noise power on the basis of a total signal power received by the emulator, a gain of at least one antenna-specific channel between the emulator and the antenna elements, and a desired signal-to-noise ratio. The noise source transmits noise at the total noise power from the at least two antenna elements to the device under test wirelessly.09-27-2012
20110009070Method for Noise Floor and Interference Estimation - The present invention relates to a method and arrangement in a wireless communication system, e.g. an evolved UMTS Terrestrial Radio Access Network, for improved scheduling and admission control of the uplink by providing an improved determining of power-related quantities, e.g. neighbour cell interference levels, for specific tones and providing more accurate determination of noise-related quantities, e.g. noise floor power estimates, for specific tones. The method and arrangement obtains a neighbour cell interference measure for each subset of tones from at least a noise floor measure for each subset of tones based on combined power quantities from the total uplink power per subset of tones and dividing said noise floor measure into sub noise floor measures for each subset of tones, said dividing dependent on the bandwidth of each subset of tones.01-13-2011
20110117859WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION METHOD, PROGRAM, AND INTEGRATED CIRCUIT - A first wireless communication device (05-19-2011
20100151794METHOD AND APPARATUS OF COMPUTING PROBABILITY OF INTERFERENCE IN OVERLAY SYSTEM AND UNDERLAY SYSTEM - A method of computing a probability of interference in an overlay system and an underlay system, the method including: setting an input parameter corresponding to each of an interfered receiver, an interfering transmitter, an opposing transmitter, and a target receiver; computing a strength of a received signal, received in the interfered receiver from the opposing transmitter; computing a transmission signal level from a victim link in the interfering transmitter; determining whether the interfering transmitter transmits a signal in the overlay system; determining a transmission power of the interfering transmitter based on the computed transmission signal level in the underlay system; computing a strength of an interference signal depending on whether the interfering transmitter transmits the signal and the transmission power of the interfering transmitter; and computing the probability of interference using the computed strength of the received signal and the computed strength of the interference signal.06-17-2010
20110212694Satellite-Band Spectrum Utilization For Reduced Or Minimum Interference - A first and/or a second communications system may provide communications service over a geographic area. A method of operating the first and/or the second communications systems may include generating a measure of aggregate interference reaching a satellite of the second communications system substantially from devices of the first communications system. The measure of aggregate interference reaching the satellite of the second communications system may be transmitted to an element of the first communications system.09-01-2011
20090311968METHOD AND ARRANGEMENT FOR NOISE FLOOR ESTIMATION - In a method of complexity reduced noise floor estimation in a wireless communications system, determining (S12-17-2009
20100069016Noise Based Quality Estimation for Signals - A method of calculating the noise power in a received signal containing a pilot channel, the method comprising estimating the power of the received signal, estimating the power of the pilot channel and calculating the noise power as a function of the estimated signal and the pilot channel powers. The noise power thus deduced may be used as a parameter of a function defining a channel quality indicator. The invention extends to corresponding apparatus.03-18-2010
20110151801METHOD FOR SPECTRUM NOISE DETECTION - A method for spectrum noise detection is provided. Means and a total mean of spectrum blocks of a frequency-domain signal are calculated. Whether the means are greater than a cut-off threshold is checked. If all the means are greater than the cut-off threshold, whether the means range between a variance lower bound and a variance upper bound is checked, an estimation bandwidth corresponding to the spectrum blocks is obtained according to a bandwidth check threshold, and whether a central frequency of the estimation bandwidth approximates a central frequency of the spectrum of the frequency-domain signal is checked. If the number of the means ranging between the variance lower bound and the variance upper bound exceeds a default value, and the estimation bandwidth is greater than a predetermined bandwidth and the central frequency of the estimation bandwidth approximates the central frequency, the frequency-domain signal is determined as a noise signal.06-23-2011
20110250851SIMULATED DEGRADATION OF SNR IN DECODED DIGITAL AUDIO CORRELATED TO WIRELESS LINK BIT-ERROR RATE - Embodiments of the present invention provide a system, apparatus and method for an audible indicator of a quality of a received digital radio transmission. After receiving a digital radio transmission in a digital radio receiver, the quality of the received digital radio transmission is detected. Then an audible communication from the received digital radio transmission is decoded. Then an audible indicator is superimposed onto the audible communication, to form a composite audible signal. Finally, an amplitude of the audible indicator is dynamically adjusted relative to an amplitude of the audible communication, responsive to a quality of the received digital radio transmission.10-13-2011
20110081871CHANNEL-DEPENDENT SCHEDULING AND LINK ADAPTATION - A mobile terminal measures interference over multiple measurement periods and generates interference probability data based on the statistical distribution of the interference measured. The interference probability data may describe, for example, the probability of each possible level of interference expected at the mobile terminal. The mobile terminal derives channel quality information as feedback to a base station based on this interference probability data (e.g., when noise at the mobile terminal falls below a threshold). In one embodiment, the mobile terminal does so by estimating from the interference probability data the probability of successfully receiving a transmission if certain feedback information is reported. Derived in this way, the feedback information more reliably indicates interference likely present at the mobile terminal when the base station sends the transmission. Accordingly, the base station controls the transmission based on the feedback information, and in some embodiments, also based on the interference probability data.04-07-2011
20110151800Delay, Gain and Phase Estimation for Measurement Receivers - Phase and gain of a transmit signal are measured at a transmitter by determining a first time delay having a first resolution at a measurement receiver between a reference signal from which the transmit signal is generated and a measured signal derived from the transmit signal by comparing amplitudes of the reference signal and the measured signal. A second time delay having a second resolution finer than the first resolution is determined at the measurement receiver between the reference signal and the measured signal based on the first time delay. The reference signal and the measured signal are time aligned at the measurement receiver based on the second time delay and the phase and gain of the transmit signal are estimated after the reference signal and the measured signal are time aligned.06-23-2011
20110151799Apparatus And Method For Detecting Communication Interference - Location determination signals are received and a location of interest is determined from the location determination signals. A communication service is established and synchronized with a known, valid base station via a first communication channel. A value of a signal strength indicator associated with the first communication channel is monitored. When the value of the signal strength indicator falls below a threshold level, a warning message is transmitted to the known, valid base station before synchronization of the communication service is lost with the known, valid base station.06-23-2011
20090176455Methods And Arrangements For Noise Rise Estimation - A received total wideband power in a wireless communications system is measured (07-09-2009
20100003925INSENSITIVE AREA DETECTING METHOD AND APPARATUS FOR THE SAME IN RADIO COMMUNICATION SYSTEM - In a method of detecting an insensitive area in a radio communication system which includes a plurality of base stations and a plurality of mobile terminals, a total reception power data is requested to a concerned one of the plurality of base stations which is connected with a concerned one of the plurality of mobile terminals, when a signal indicating an insensitive state of the concerned mobile terminal is received. Radio environment of an up link is determined from the concerned mobile terminal to the concerned base station based on the total reception power data from the concerned base station. An up link insensitive area is determined based on a position data of the mobile terminal and the radio environment.01-07-2010
20100003924RADIO FREQUENCY INTERFERENCE SENSING SYSTEM AND METHOD - A method of sensing radio frequency interference (RFI) in a wireless system is provided. The method includes receiving wireless data through a wireless receiver and evaluating received wireless data through a receiver baseband module to identify an occurrence of a signal detection failure by a physical (PHY) layer or a media access control (MAC) layer of the wireless system. The method also includes triggering a radio frequency interference sensing state in response to the occurrence of signal detection failure by the physical layer or the media access control layer of the wireless system.01-07-2010
20110151802APPARATUS AND METHOD FOR ESTIMATING CHANNEL IN MOBILE COMMUNICATION SYSTEM - An apparatus and a method for estimating a channel in a mobile communication system are provided. The apparatus includes a channel estimation unit for determining a channel estimation value using a channel power for each of a plurality of fingers, and a noise estimation unit for selecting a scheme for estimating a thermal noise power according to a channel environment among schemes for determining a plurality of thermal noise powers, and for estimating a noise using the channel estimation value in the selected scheme.06-23-2011
20090318090Adaptive Signal Power Measurement Methods and Apparatus - Methods and apparatus in a mobile receiver for selecting among methods of estimating a received power of at least one signal. A method includes selecting a first method or a second method of measuring the received power based on a cell timing and a measurement interval. Information is received from a first base station about the measurement interval during which to perform the first method and the second method on a signal transmitted by at least one second base station. The timing of the at least one second base station is determined, and based on the timing of the at least one second base station and the measurement interval, one of the first method and the second method is selected.12-24-2009
20080214118Line Sensor Selection For Quantifying Alien Crosstalk in a Shared Communications Medium - In a communication medium including a first set A of n communication channels and a second set U of m communication channels, a method for selecting sensor channels in A for quantifying crosstalk from U, including operating A in a receive-only mode (09-04-2008
20080214121POWER CONTROL FOR A WIRELESS COMMUNICATION SYSTEM UTILIZING ORTHOGONAL MULTIPLEXING - Techniques for adjusting transmit power to mitigate both intra-sector interference to a serving base station and inter-sector interference to neighbor base stations are described. The amount of inter-sector interference that a terminal may cause may be roughly estimated based on the total interference observed by each neighbor base station, channel gains for the serving and neighbor base stations, and the current transmit power level. The transmit power may be decreased if high interference is observed by a neighbor base station and increased otherwise. The transmit power may be adjusted by a larger amount and/or more frequently if the terminal is located closer to the neighbor base station observing high interference and/or if the current transmit power level is higher, and vice versa. The intra-sector interference is maintained within an acceptable level by limiting a received SNR for the terminal to be within a range of allowable SNRs.09-04-2008
20100279624DETECTING INTERFERENCE IN A WIRELESS COMMUNICATION SYSTEM - Method to determine the existence of interferences in a wireless communication link based on comparing the power received at both links of radio channel and the propagation losses calculated from both power and quality measurements, comprising: 11-04-2010
20110053517 ARRANGEMENT FOR REDUCING THE EFFECT OF SPURIOUS SIGNALS IN TELECOMMUNICATIONS AT RADIO FREQUENCIES - An arrangement for reducing unwanted effects of spurious signals from interference sources in telecommunications at radio frequencies. A communication unit transmits and receives information at radio frequency. Receivers receive the radio signals from the communication unit and for reflecting radio signals back. A control unit is adapted at least to switch the transmitter or receiver of the communication unit off substantially at the frequency of the spurious signals.03-03-2011
20110070842METHOD AND APPARATUS FOR BAND TRANSFER IN MULTIBAND COMMUNICATION SYSTEM - A method and apparatus for transferring to a second communication band and returning to an original communication band according to a channel state in a multiband communication system are provided. The method includes communicating with a peer device in a first band, determining a channel state of a second band, and transferring to the second band based on a result of the determination, thereby efficiently using a plurality of bands and thus improving a data transmission speed.03-24-2011
20120309322Standing Wave Detection Method, Standing Wave Detection Apparatus and Base Station - A standing wave detection method, a standing wave detection apparatus, and a base station are disclosed. The method includes collecting, a feedback signal from a feedback path of a base station which uses a baseband multi-tone signal as a transmission signal; performing calibration on the feedback signal by using stored calibration data to obtain a reflected signal in the feedback signal; and obtaining a standing wave detection value according to the transmission signal and the reflected signal that is in the feedback signal.12-06-2012
20100190450ITERATIVE BEAM SELECTION METHOD WITH RECEIVER AND TRANSMITTER DIVERSITY - The present invention relates to a method for determining the best transmitter and receiver beams with a reduced number of calculations for the best antenna beam arrangement between a transmitter and a receiver. The iterative routine within this method comprises a transmitter beam determination sequence, a feedback sequence and a receiver beam determination sequence. While calculating the best possible antenna beam arrangement, the antenna beam width does not require to be reduced.07-29-2010
20090264080METHOD AND APPARATUS TO ESTIMATE WIRELESS BASE STATION SIGNAL QUALITY OVER THE AIR - The quality of the signal from a base station is measured and adjusted for distortion due to multipath and due to signals from neighboring co-channel base stations. The signal quality is measured conventionally by determining Rho or EVM and then Rho or EVM are adjusted. To adjust the signal the process includes the steps of: (a) sampling a received CDMA base station signal in a particular frequency channel, calculating the total received power to provide a reference value for subsequent normalization; (b) demodulating the received signal and constructing an ideal reference signal; (c) correlating between the ideal reference signal and received signal to determine a Rho value, or calculating the ratio of the difference between ideal and received signal to the ideal signal to obtain EVM; (d) performing a self cross correlation to separate signals from the sampled received signal on different delay paths, and determining a multipath power value x as a total power of signals on non-dominant ones of the delay paths; (e) performing a code correlation pilot scan of the sampled signal to determine strengths of signals from neighboring co-channel base stations; (f) summing the power levels of the neighboring co-channel base station signals to provide a total pilot pollution power y; and (g) calculating an adjusted Rho or EVM by removing x and y from the total received power.10-22-2009
20110306307METHOD FOR SITE APPRAISAL FOR THE OPERATION OF A DATA RADIO RECEIVER, PARTICULARLY FOR THE CAPTURE OF CONSUMPTION DATA - The suitability of a fixed or current mobile operating location for the receiver (12-15-2011
20100167660WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - A reception unit measures a reception power level of a reference signal which is received from a base station apparatus BS. A reception signal processing unit acquires information indicative of a transmission power level of the reference signal. A control unit finds a path loss on the basis of the reception power level and this information. The control unit determines, on the basis of the path loss, a transmission power level of that one of two transmission frequency bands, which is closer to a frequency band with respect to which the pass loss has been measured. The control unit determines a transmission power level of the other transmission frequency band, which is farther from the frequency band with respect to which the pass loss has been measured, by correcting the transmission power level on the basis of a correction value based on a difference in frequency.07-01-2010
20100035558METHODS AND ARRANGEMENTS FOR MEMORY-EFFICIENT ESTIMATION OF NOISE FLOOR - A method for noise rise estimation in a wireless communications system is presented, which comprises measuring of samples of at least received total wideband power. From the measured samples of at least received total wideband power, a probability distribution for a first power quantity is estimated. This first power quantity can be the received total wideband power itself. The probability distribution for the first power quantity is used for computing a conditional probability distribution of a noise floor measure. This computing is performed recursively. A value of a noise rise measure is finally calculated based on the conditional probability distribution for the noise floor measure. A node of a wireless communications system having the above functionality is also presented. Typically, the node is a RNC.02-11-2010
20120040625REAL-TIME RSL MONITORING IN A WEB-BASED APPLICATION - A system and method for monitoring an attribute of a received signal in a wireless network having plural radios wherein one of the radios includes a monitoring module operatively connected to a second network. An attribute of one radio is monitored substantially continuously at the monitoring module. A display device is operatively connected to the second network. A value representative of the current state of the attribute is transmitted via the second network to the display device upon a change in the state of the attribute from a previous state of the attribute, and the value is displayed on the display device.02-16-2012
20120040624DEVICE AND METHOD FOR DETECTING CHANNEL STATE - The present invention proposes a device and method for detecting the channel state. The detecting device first monitors a channel within a predetermined duration so as to receive a plurality of signals transmitted on the channel, and then determines whether part of the plurality of signals possess periodicity. If part of the plurality of signals possesses periodicity, then the detecting device determines that the channel is interfered. Even if there is no or less data traffic over one or more wireless networks which occupy the channel, the detecting device and method provided by the present invention are capable of detecting the existence of the one or more wireless networks, and determine that the channel is interfered, so as to avoid potential interference. In addition, the cost to detect whether a channel is interfered will be reduced effectively by using the detecting device and the detecting method according to embodiments of the present invention.02-16-2012
20120040623METHOD AND SYSTEM FOR TRIGGERING CORRESPONDING FUNCTIONS OF ELECTRONIC DEVICES - An exemplary method for triggering a corresponding function of an electronic device and a system using the same are provided. The method includes detecting radio signals between a first electronic device and a second electronic device, generating a radio signal quality evaluation value according to the characteristic of the radio signals and setting the function triggering module to one of the working modes according to the radio signal quality evaluation value.02-16-2012
20110065394Traffic constraints in a mmWAVE wireless network - A network controller may schedule directional communications between two devices in its own network in such a way as to avoid potential interference from anticipated transmissions from another device. In some instances, the network controller may be one of the two devices using the directional communications. The timing of the anticipated transmissions may be determined by the network controller based on its own observations, or it may be informed of that timing in a transmission from a device in its own network. A possible format is given for transmitting that information to the network controller.03-17-2011
20110319033Evaluation Device and Method for Providing a Transceiver System with Performance Information Thereof - An evaluation device is adapted for providing a transceiver system with performance information thereof. The transceiver system models a channel between a transmitter and a receiver thereof using Nakagami distribution with a fading parameter. The evaluation device includes a threshold value computing module, a signal-to-noise ratio (SNR) setting module, a probability computing module, and an output module. The threshold value computing module is operable to compute a threshold value based upon a given capacity. The SNR setting module is operable to set an average SNR for the channel between the transmitter and the receiver of the transceiver system. The probability computing module is operable, based upon the fading parameter, the average SNR and the threshold value, to compute an outage probability of the transceiver system corresponding to the given capacity. The output module is operable to provide the transceiver system with the average SNR and the outage probability.12-29-2011
20110319032APPARATUS AND METHOD TO CONTROL IDLE-MODE RADIO MEASUREMENTS - An apparatus and method for controlling idle mode radio measurements comprising: determining if a radio measurement is less than a radio threshold; determining a time duration in which the radio measurement is less than the radio threshold; determining if the time duration is greater than a time measurement threshold; and obtaining at least one other radio measurement from at least one base station which is not a serving cell.12-29-2011
20120252370HANDS-FREE TERMINALS AND HANDS-FREE SYSTEM FOR CARS - A user of a hands-free phone cannot determine with which speech quality the distant side of communication is listened to, and does not know which action to be required to improve the speech quality. In the case of the present invention, a function of presenting an action to be implemented by the user to improve the speech quality at the opposite party is mounted on the hands-free terminal. For the presentation here, it is assumed that the hands-free terminal according to the present invention has a function of estimating the speech quality at the distant side, a function of estimating an action to be implemented by the user to improve the estimated speech quality, and a function of presenting the estimated action to the user.10-04-2012
20090036059Apparatus and method for E-HICH/E-RGCH processing, metric estimation and detection - Apparatus and method for processing a received pilot to obtain noise estimation of a pilot channel and processing a received first signal channel, separately from a second signal channel that is orthogonal to the first signal channel, to obtain a signal level of the first signal channel. The noise estimation and the signal level are used to calculate a SNR value. Detection on the first channel is done by checking the SNR and the sign of a soft metric.02-05-2009
20090191818APPARATUS AND METHOD FOR ESTIMATING NOISE AND INTERFERENCE POWER IN A COMMUNICATION SYSTEM - A method is provided for estimating a Noise and Interference (NI) power in a ranging code reception apparatus in a communication system. The method includes generating S correlation values by calculating correlations between L ranging subcarriers received at a ranging code reception apparatus and L elements included in each of S ranging codes available in the ranging code reception apparatus, detecting N reception-desired ranging codes that the ranging code reception apparatus desires to receive, among the S ranging codes, using the S correlation values, and selecting M remaining ranging codes among (S-N) ranging codes obtained by removing the N reception-desired ranging codes from the S ranging codes, and estimating a first NI power using correlation values for the M remaining ranging codes.07-30-2009
20080318530Sir Estimation Techniques - The estimated power levels that are used to estimate a signal-to-interference ratio (SIR) are filtered so as to minimize the mean-square error (MSE) of the estimated power estimates. First order infinite impulse response (IIR) filters are used to filter both the signal power estimates and the noise power estimates. Optionally, estimates of the average signal power and average interference power are filtered using Weiner linear prediction filters. The SIR estimates are suitable for use in a transmission channel that includes fading as well as interference, and are suitable for use in BPSK, QPSK, and other modulation systems.12-25-2008
20110165846METHOD AND SYSTEM FOR USING NON-UNIFORM CHANNEL QUANTIZATION FOR A FEEDBACK-BASED COMMUNICATION SYSTEM - A mobile device estimates channel state information (CSI) comprising, for example, CQI and/or SNR, for a downlink channel. The estimated CSI is non-uniformly quantized and transmitted to the base station over a finite-rate feedback channel. Different portions of the estimated CSI are quantized using different quantization step sizes, which are determined according to a performance metric function such as a channel capacity function of the estimated CSI. A quantization step size for a portion of the estimated CSI is increased if a low distribution probability is indicated by the portion of the estimated CSI. A quantization step size for a portion of the estimated CSI is decreased if a high distribution probability is indicated. The mobile device quantizes the estimated CSI using the determined quantization step sizes to transmit to the base station over the finite-rate feedback channel. Downlink data transmission is received according to the transmitted CSI.07-07-2011
20110092168Calibration of a communications transmitter to optimize DC offset rejection and image rejection - A method and apparatus is disclosed to optimize one or more operational parameters of a communications transmitter to reduce undesirable noise and/or interference embedded within a transmitted communications signal resulting from one or more imperfections. A baseband processor selects one or more calibration signals to allow for optimization of one or more statistical parameters. A calibration module determines the one or more statistical parameters of the transmitted communications signal in response to the one or more calibration signals. The calibration module provides one or more compensation parameters indicative of the one or more statistical parameters to the baseband processor module. The baseband processor adjusts the one or more operational parameters of the communications transmitter in response to the one or more compensation parameters. The calibration module and the baseband processor continue to determine the one or more statistical parameters and to adjust the one or more operational parameters in a similar manner until the one or more statistical parameters are optimized.04-21-2011
20110105047DETERMINATION OF ANTENNA NOISE TEMPERATURE FOR HANDHELD WIRELESS DEVICES - Antenna noise temperature is determined for a handheld wireless communication device which typically includes a radio, e.g. having a wireless transceiver and associated circuitry connected thereto, and an antenna connected to the radio. The method includes measuring an antenna thermal noise component, measuring a radio noise component, measuring an environmental background noise component, and determining the antenna noise temperature based upon the measured antenna thermal noise, radio noise, and environmental background noise components. The method may include measuring antenna efficiency, and determining further includes weighting at least one of the measured antenna thermal noise, radio noise and environmental background noise components based upon the measured antenna efficiency.05-05-2011
20120129466Evaluation Device and Method for Providing a Transceiver System with Performance Information Thereof - An evaluation device is adapted for providing a transceiver system with performance information thereof. The transceiver system models a channel between a transmitter and a receiver thereof using Nakagami distribution with a fading parameter. The evaluation device includes a signal-to-noise ratio (SNR) computing module, a capacity computing module, and an output module. The SNR computing module is operable to set an average SNR for the channel between the transmitter and the receiver, and to compute an expected value and variance of an effective SNR of the transceiver system according to the fading parameter and the average SNR. The capacity computing module is operable to compute an outage capacity of the transceiver system based upon the expected value and the variance of the effective SNR and a transmission outage parameter. The output module is operable to provide the transceiver system with the average SNR and the outage capacity.05-24-2012
20120135691NOISE-CONSTRAINED DIFFUSION LEAST MEAN SQUARE METHOD FOR ESTIMATION IN ADAPTIVE NETWORKS - The noise-constrained diffusion least mean square method for estimation in adaptive networks is based on the Least Mean Squares (LMS) algorithm. The method uses a variable step size in which the step-size variation rule results directly from the noise constraint.05-31-2012
20120315860Assessing Interference Environment for Wireless Communication Devices - Disclosed is a device and method to automate the process of measuring RF noise, correlating measured noise with known sources, and making adjustments to the noise-measuring and reporting process. A wireless communication device is coupled to equipment at a fixed location, and transmits data about the operation of the equipment back to an operator, via a provider's network. Examples include fixed wireless terminals. A management entity aboard the wireless communication device performs the measurements via a transceiver, and performs remedial actions when required, without requiring an onsite technician or remote assistance. The management entity may include a spectrum analyzer.12-13-2012
20120315859METHOD AND USER EQUIPMENT FOR MEASURING INTERFERENCE, AND METHOD AND BASE STATION FOR RECEIVING INTERFERENCE INFORMATION - A method and apparatus for providing information indicating radio resources for multi-cell interference measurement at a BS so that a UE can more accurately measure interference are disclosed.12-13-2012
20100048142MEASURING DEVICE, TEST DEVICE, ELECTRONIC DEVICE, MEASURING METHOD, PROGRAM, AND RECORDING MEDIUM - Provided is a measurement apparatus that measures a signal under measurement, including a strobe timing generator that sequentially generates strobes arranged at substantially equal time intervals; a level comparing section that detects a signal level of the signal under measurement at a timing of each sequentially provided strobe; a capture memory that stores therein a data sequence of the signal levels sequentially detected by the level comparing section; a window function multiplying section that multiplies the data sequence by a window function; a frequency domain converting section that converts the data sequence multiplied by the window function into a spectrum in the frequency domain; and an instantaneous phase noise calculating section that calculates instantaneous phase noise on a time axis of the signal under measurement, based on the spectrum.02-25-2010
20100273435UPLINK FEEDBACK CHANNEL REPORTING MECHANISM IN WIRELESS SYSTEMS - An uplink feedback channel reporting method is disclosed for using the primary and secondary fast feedback channels to efficiently report the channel quality, MIMO feedback, and CQI types of data from a mobile station to a base station. The reporting method reports regular information periodically and non-regular information on demand.10-28-2010
20120258671BASE STATION, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A base station includes a first communication section configured to communicate a wireless signal with the mobile station and another base station, a second communication section configured to communicate a data signal with a core network being connected to the base station, a wireless relay function section configured to perform first control to relay the wireless signal to be communicated with the other base station between the other base station and the mobile station, a communication function section configured to perform second control to convert between a data signal and a wireless signal, and to transmit the converted data signal and the converted wireless signal, and a selection control section configured to select at least one of the first control and the second control to use for communication with the mobile station, based on a reception level of the wireless signal from the other base station.10-11-2012
20120231746RADIO BASE STATION AND COMMUNICATION CONTROL METHOD - A first radio base station (09-13-2012
20100240317METHODS AND APPARATUS FOR TESTING AND INTEGRATION OF MODULES WITHIN AN ELECTRONIC DEVICE - Methods and apparatus for analysis of electronic components such as radio transceivers (for example, WLAN, Bluetooth, cellular, GPS). In one embodiment, a “black box” is diagnosed in its final device application and layout, using a series of software test routines or suites. The test suites provide simultaneous monitoring of multiple non-overlapping status indicators. Each test suite can be selectively enabled or disabled, and may also provide runtime modification of one or more parameters, and or intelligent testing of system operation. In another embodiment, multiple black box modules within a single form factor device are simultaneously run; the interference levels between the black box modules (as well as other parameters) are independently measured, displayed and logged to the user. Exemplary embodiments are described in reference to a Bluetooth module and WLAN module operating within a spatially restricted device (such as a desktop/laptop computer, “smartphone”, Bluetooth mouse and keyboard).09-23-2010
20080299911METHOD AND APPARATUS FOR QUALITY OF SERVICE SIGNALING AND CONFIGURATION - A method implemented in a wireless transmit receive unit (WTRU) for signaling Quality of Service (QoS) information. The method includes the WTRU transmitting a first scalar value indicative of a first plurality of QoS parameters, and the WTRU receiving a second scalar value indicative of a second plurality of QoS parameters12-04-2008
20110039500 METHOD FOR COMMUNICATING IN A NETWORK AND RADIO STATIONS THEREFOR - The present invention relates to a method for communicating between a primary station and at least one secondary station, comprising the steps of (a) at the primary station, requesting the secondary station to transmit channel quality information representative of the channel quality and, (b) at the secondary station, responsive to the request of step (a), transmitting to the primary station the channel quality information, wherein step (b) comprises substep (b1) wherein the secondary station further transmits with the channel quality information an indication of a secondary station buffer status.02-17-2011
20110045782DEVICES AND METHODS FOR TRANSMITTING AND RECEIVING DATA USING PRECODING MATRIX - A communication system to feed back an index of a precoding matrix is provided. A terminal may feed back an index of an optimal precoding matrix based on estimated channel status. A base station may transmit data to the terminal based on the index of the precoding matrix received from the terminal.02-24-2011
20110217936Method and Apparatus to Improve Closed Loop Transmit Diversity Modes Performance via Interference Suppression in a WCDMA Network Equipped with a RAKE Receiver - A method for processing signals in a wireless communication system includes determining at a receiver, a maximum one of a plurality of signal-to-interference-plus-noise ratio (SINR) values for a received wireless signal. The plurality of SINR values may be calculated using a corresponding plurality of weight values. A particular one of the corresponding plurality of weight values may be fed back to a transmitter of the received wireless signal. The particular one of the corresponding plurality of weight values may be associated with the determined maximum one of the calculated plurality of SINR values. The particular one of the corresponding plurality of weight values may be communicated to the transmitter via at least one uplink communication channel. The at least one uplink communication channel may include a high-speed dedicated physical control channel (HS-DPCCH). Each of the plurality of SINR values may include at least one inter-path interference (IPI) value.09-08-2011
20120322390WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION SYSTEM, INTERFERENCE CAUSING CONTROL METHOD, STORAGE MEDIUM AND CONTROL APPARATUS - [Problem] To provide a wireless communication apparatus, a wireless communication system, an interference causing control method, a storage medium, and a control apparatus which can carry out appropriate interference causing control to a secondary system adaptively to an actual environment with no change in a configuration of a primary system.12-20-2012
20100203840METHOD AND DECODER FOR DECODING A WIRELESS TRANSMISSION FROM A PREDEFINED USER - A method of decoding in a wireless receiver, a wireless transmission from a predefined user, the method comprising: receiving a wireless transmission signal (r(m)); determining a one or more interfering spreading codes (s08-12-2010
20120329403WIRELESS STATION, DETERMINATION APPARATUS, WIRELESS COMMUNICATION SYSTEM, DETERMINATION METHOD, AND STORAGE MEDIUM - [Problem] To provide a wireless station, a determination apparatus, a wireless communication system, a determination method, and a storage medium which can carry out appropriate interference causing control in a secondary system adaptively to an actual environment with no change in a configuration of a primary system.12-27-2012
20130017796SYSTEMS, METHODS, DEVICES, AND COMPUTER PROGRAM PRODUCTS FOR CONTROL AND PERFORMANCE PREDICTION IN WIRELESS NETWORKS - Systems, methods, devices, and computer program products are directed to mobility control and performance prediction in directional wireless networks. Network coverage and connectivity are optimized. Convex and non-convex network modeling is implemented to provide adaptive topology control and mobility control within the network, whereby communication links are retained, released, or reconfigured based on their communication role within the network architecture. Optionally or alternatively, network health is monitored, future network failure or degradation conditions are predicted, and the network reconfigures responsive to the predictions to avoid the failure or degradation conditions.01-17-2013
20130171945METHOD FOR TESTING RADIO FREQUENCY INTERFERENCE OF ELECTROMAGNETIC COMPATIBILITY CHAMBER - A method for testing radio frequency interference (RFI) of electromagnetic compatibility (EMC) chamber includes: setting a threshold value of noise bandwidth (NBW) on the computer in response to user's operation, activating a signal source in the EMC chamber to transmit test signals using the computer, adjusting the antenna to a predetermined height and orients a polarization direction along a vertical direction, and controlling the signal source to rotate using the computer, testing the EMC chamber to obtain a NBW value, and comparing the NBW value with the threshold value to determine the RFI of the EMC chamber.07-04-2013
20080227401System and method for interference mitigation for wireless communication - Disclosed are systems and methods which provide interference mitigation by making alternative resources available within areas served by wireless communication links. Embodiments provide multiple channel availability in establishing wireless communication links to facilitate interference mitigation. Time domain techniques, spatial processing techniques, and/or frequency domain techniques may be implemented for spectrum management. Embodiments provide wireless base station configurations in which all or a plurality of base station sectors use a same frequency channel and/or in which each sector or a plurality of sectors use all frequency channels. Multi-channel strategies may be implemented such as to provide dynamic selection of a “best” frequency channel, to provide transmission of identical data on multiple channels for combining/selection at the receiver, and/or to provide for dividing the data for transmission on multiple channels.09-18-2008
20080227400Methods And Arrangements For Noise Rise Estimation - A received total wideband power (09-18-2008
20120252371METHOD, SYSTEM AND APPARATUS FOR REMOTE INTERFERENCE MONITORING AND ANALYSIS - A method, system and apparatus for monitoring and analyzing interference in a source of RF signals is disclosed. The apparatus comprises a first display for presenting a frequency spectrum of the collected signals over a frequency band and at a display time within a time frame and a second display for presenting a time domain representation of the signals over the time frame and for a display frequency within the frequency band where modification of the display frequency results in the time domain representation being simultaneously updated and modification of the display time results in the frequency spectrum being simultaneously updated. The system comprises monitoring devices each comprising a monitoring unit and a network interface for transmitting RF signals to a server system comprising and a plurality of analysis tools.10-04-2012
20080214120Communication system and communication method - A noise judgment unit of a receiver (mobile terminal) judges whether there is a factor for poor reception such as 1/f noise in a receiving unit of the mobile terminal based upon the output of an FFT unit, and notifies a transmitter (base station) of that measurement result. When the mobile terminal is affected by 1/f noise, the base station transmits a signal to that mobile station by an OFDM method without using subcarriers at which ⅕ noise generates.09-04-2008
20130122822INITIAL ACQUISITION AND NEIGHBOR SEARCH ALGORITHMS FOR WIRELESS NETWORKS - In a wireless network, a base station (BS) may send a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). The synchronization signals may be used by user equipments (UEs) for cell detection and acquisition. A typical searching operation may involve first locating the PSS sequences transmitted by neighboring BSs, followed by SSS detection. Described further herein are algorithms that result in the detection of the PSS and the SSS from a BS. A method for detecting a BS generally includes sampling a received signal from receiver antennas to obtain a sampled sequence, analyzing the sampled sequence to detect a PSS in a current half-frame (HF), calculating signal-to-noise ratio (SNR) metrics based on the detected PSS, combining the calculated SNR metrics with SNR metrics from previous HFs, analyzing the combined SNR metrics to obtain timing information, and analyzing the sampled sequence using the timing information to detect a SSS.05-16-2013
20100317298Method and Arrangement for Assisting in Direction Adjustment of a Directional Antenna - An object of the present invention is to provide an improved and simplified mechanism for assisting in antenna direction adjustment. The object is achieved by a method in a wireless communication device 12-16-2010
20110312282Assessing Interference Environment for Wireless Communication Devices - Disclosed is a device and method to automate the process of measuring RF noise, correlating measured noise with known sources, and making adjustments to the noise-measuring and reporting process. A wireless communication device is coupled to equipment at a fixed location, and transmits data about the operation of the equipment back to an operator, via a provider's network. Examples include fixed wireless terminals. A management entity aboard the wireless communication device performs the measurements via a transceiver, and performs remedial actions when required, without requiring an onsite technician or remote assistance. The management entity may include a spectrum analyzer.12-22-2011
20130189931WIRELESS COMMUNICATION METHODS AND APPARATUS - In one embodiment a method of identifying interference in a wireless network is disclosed. The wireless network comprises a first base station and a second base station. The method comprises detecting an increase in an error rate in a wireless connection between the first base station and a first wireless device; comparing a reference signal power received by the first wireless device from the first base station with a threshold value; and determining that the increase in error rate is due to interference from a wireless connection between the second base station and a second wireless device if the reference signal power is greater than the threshold.07-25-2013
20120003940COMMUNICATION DEVICE, RECORDING MEDIUM FOR CONTROL PROGRAM OF COMMUNICATION DEVICE, COMMUNICATION SYSTEM AND COMMUNICATION METHOD - In order to settle a problem of suppressing degradation of a throughput of a communication system, a communication device is provided with a reception means which receives and accumulates a first datum which a first device transmits addressing a second device and a second datum which the second device transmits, a transmission means which transmits the first datum to the second device, a quality index acquisition means which acquires a first index which is a quality of communication between the first device and the second device and a second index which is a quality of communication between the communication device and the second device, and a judgment means which forces to transmit the accumulated first datum to the second device using the transmission means in the case of judging that the second index is better than the first index and a reception condition of the second datum shows that the second device does not receive normally the first datum.01-05-2012
20120058734METHOD AND DETECTOR FOR DETECTING A POSSIBLE TRANSMISSION OF DATA - A detector for detecting a possible transmission of data according to an embodiment of the present invention includes a receiver adapted to the determine a spectral density in the frequency range of an electromagnetic spectrum and an evaluating circuit coupled to the receiver and adapted to determine an effective channel capacity based on the determined spectral density. The evaluating circuit is further adapted to compare the determined effective channel capacity with a threshold value and adapted to generate an evaluation signal indicating a possible presence of the transmission of data based on a result of the comparison.03-08-2012
20120094610Apparatus, Method, Computer Program for Communication and System Thereof - The invention is related to a method comprising: receiving a beacon signal from at least one transmitter; measuring total received interference power; determining strength of the received at least one beacon signal; determining at least one offset value by using the information the at least one beacon signal comprises; generating estimates of received interference power values transmitter-wise by using the determined at least one offset value and the determined strength of the received at least one beacon signal; combining the transmitter-wise estimated received interference power values for obtaining an estimated total received interference power; and subtracting the estimated total received interference power from the measured total received interference power for obtaining a residual interference power, the residual interference power originating from uncooperative devices.04-19-2012

Patent applications in class Noise, distortion, or unwanted signal detection (e.g., quality control, etc.)