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56 results about "COMP Measurement" patented technology
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Techniques for channel state information feedback in wireless communication system
ActiveUS20100271968A1Site diversityReceivers monitoringCommunications systemChannel state information feedback
Methods for a User Equipment (UE) to transmit Channel Quality Index (CQI) feedback information, and an indicator in feedback information, to an evolved Node B (eNB) in a wireless communication system, and apparatuses therefore, are provided. A method for a UE to transmit CQI feedback information to eNB in a wireless communication system, includes obtaining one or more Transmission Points Configurations for Coordinated MultiPoint (CoMP) (TPCCs), each TPCC including a unique combination of one or more cells in a CoMP measurement set, estimating a channel for one or more cells in the CoMP measurement set, computing a CQI for each of at least one of the one or more TPCCs, each CQI being computed using one or more estimated channels that correspond to the combination of one or more cells included in a corresponding TPCC, generating CQI feedback information based on the one or more CQIs, and transmitting the CQI feedback information.
Owner:SAMSUNG ELECTRONICS CO LTD
Mobile communication system
ActiveUS20150036658A1Improve communication qualitySite diversityError preventionMobile communication systemsComputer science
In a mobile communication system, an RRM measurement set is set as a collection of cells to become targets on which a UE performs a process of detecting whether or not radio communication is allowed. Among the cells in the RRM measurement set, a CoMP measurement set is set as a collection of cells to become candidates on which the UE performs a process of detecting whether or not coordinated communication (CoMP communication) is allowed. Among the cells of the CoMP measurement set, a CoMP active set is set as a collection of cells to become targets on which the UE performs the process of detecting whether or not CoMP communication is allowed.
Owner:MITSUBISHI ELECTRIC CORP
Method, system and equipment for determining collaborative community and transmission point in CoMP
ActiveCN102056264ADiversity/multi-antenna systemsWireless communicationTransport systemSounding reference signal
The embodiment of the invention discloses a method for determining a collaborative community and a transmission point in Coordinated Multi-Point Transmission (CoMP). The method comprises the following steps that a CoMP measurement set is determined through a serving cell, a CoMP coordination request is sent to an alternative collaborative community in the CoMP measurement set, and the resource allocation information of a searching reference signal (SRS) sent by a terminal is carried in the CoMP coordination request; after the CoMP coordination request is received by the alternative collaborative community, the determined feedback content is sent to the serving cell as per the SRS sent by the receiving terminal of the resource allocation information of the SRS, feedback content and feedback method to the serving cell determined by the SRS and the feedback method; and after the CoMP collaborative community congregation and / or CoMP transmission point of the terminal is determined by the serving cell as per the received feedback content. The embodiment of the invention further discloses a multi-point collaborative transmission system and equipment. The purpose of determining the CoMP collaborative community congregation and / or CoMP transmission point in the Coordinated Multi-Point Transmission on a network side through the SRS is realized through the multi-point collaborative transmission system and equipment.
Owner:DATANG MOBILE COMM EQUIP CO LTD
Calibration and compensation for errors in position measurement
Methods and systems method for sensing a position of an object in a body include positioning a probe in the body, making measurements of mapping electrical currents passing between at least a first electrode on the probe and a plurality of second electrodes on a surface of the body, calibrating the measurements so as to compensate for one or more non-ideal features of the measurements including effects of system-dependent electrical coupling to one or more devices other than the first electrode and the second electrodes, and computing the position of the probe in the body using the calibrated measurements.
Owner:BIOSENSE WEBSTER INC
Correction of motion influences in NMR signals
ActiveUS20050088176A1Electric/magnetic detection for well-loggingMaterial analysis by using resonanceEngineeringMechanical engineering
An apparatus and method for compensating for the effect of tool motion in NMR MWD measurements. Signals obtained from a directionally sensitive receiver are compensated for the effects of tool motion. In an alternative embodiment, directional transmitters and receivers are used, with the pulsing of the transmitter controlled by the output of motion sensors. In another embodiment, the transmitters and receivers may be axisymmetric and the received signals are corrected using results of a NMR simulation program that takes account of the recorded motion of the apparatus.
Owner:BAKER HUGHES INC
In-Line measuring devices and method for compensation measurement errors in in-line measuring devices
ActiveUS20070186686A1Little effortVolume meteringDirect mass flowmetersElectricityMeasurement device
The measuring device comprises, for measuring multi phase mixture, a vibratory-type transducer and a measuring device electronics electrically coupled with the vibratory-type transducer. The transducer includes at least one measuring tube inserted into the course of the pipeline. An exciter arrangement acts on the measuring tube for causing the at least one measuring tube to vibrate. A sensor arrangement senses vibrations of the at least one measuring tube and delivers at least one oscillation measurement signal representing oscillations of the measuring tube. Further, the measuring device electronics delivers an excitation current driving the exciter arrangement. The measuring device is adapted to compensating measurement errors, induced due to the presence of multi phase mixture, based on a movin resonator model (MRM).
Owner:ENDRESS HAUSER FLOWTEC AG
Control method, system and device of CoMP (Coordinated Multi-point Transmission/Reception) mode
ActiveCN101932080AIncrease flexibilityImprove transmission efficiencyAssess restrictionTelecommunicationsCOMP Measurement
The invention provides a control method of a CoMP (Coordinated Multi-point Transmission / Reception) mode, comprising the following steps of: judging whether the CoMP mode is started for user equipment (UE) or not by a service cell; if the service cell judges that the CoMP mode is started fro the UE, issuing measurement configuration information to the UE by the service cell; and receiving measurement report information returned by the UE according to the measurement configuration information and configuring a special CoMP measurement set for the UE according to the measurement report information by the service cell. The control method of the CoMP mode in an LTE-A (Long Term Evolution-Advanced) system can ensure that the on / off of the CoMP mode can be switched according to actual situation,thereby enhancing scheduling flexibility and improving transmission efficiency.
Owner:DATANG MOBILE COMM EQUIP CO LTD
Wave compensation measuring device and measuring method and application thereof in ocean platform
ActiveCN106882344AReduce the difficulty of heave compensation measurementReduce cost of measurementShip vibration reductionMovement controllersEngineeringLinear displacement
The invention discloses a wave compensation measuring device, a measuring method and an applicationthereof in an ocean platform. The wave compensation measuring device comprises acompensation drive unit and a platform displacement measurement unit, the compensation drive unit comprises a rolling compensation drive device, a pitch compensation drive device, a heave compensation drive device and a drive connection rod; the connection between an upper measurement plate and a lower measurement plate is connected with six linear displacement sensors. The platform displacement measurement unit is arranged to simulatethe six degrees of freedom platform, whereinthe six linear displacement sensors correspond to the six servo cylinders of the six degrees of freedom platform; a compensation drive unit is arranged so as to conductwave compensations on theplatform displacement measurement unit, thus the wave compensation volume of theservo cylinders of the six degrees of freedom platform six is measured, the complex parallel connection machine program algorithm is converted into a mechanical news transmission mechanism, and the wave compensation measurement difficulty is reduced.
Owner:KEEN OFFSHORE ENG CO LTD
Method and device for determining cqi value in coordinated multi-point transmission/reception
ActiveUS20120140694A1Reduce Feedback OverheadAccurate valueSite diversityFrequency-division multiplex detailsCorrelation coefficientEngineering
In the invention, a method for determining a channel quality indicator (CQI) value in coordinated multi-point transmission / reception (COMP) is provided, wherein the method comprises the following steps: a receiving side feeds back an independent CQI value or normalized useful signal power of each point of all or part of the points in a COMP measurement set or reporting set to a network side; the receiving side feeds back the correlation coefficient between the channel of each point and the channel of a master serving point to the network side; and the network side determines, according to the correlation coefficient and the independent CQI value of each point or normalized useful signal power, the CQI value used for coordinated multi-point transmission / reception. In the invention, a device is also provided for determining the CQI value in COMP. The feedback overhead is low in the present invention, and a more accurate final CQI value can be obtained through function operation.
Owner:ZTE CORP
Correction of motion influences in NMR signals
ActiveUS7268547B2Electric/magnetic detection for well-loggingMaterial analysis by using resonanceEngineeringMechanical engineering
Owner:BAKER HUGHES HLDG LLC
Feedback method of channel quality index (CQI) and apparatus thereof
ActiveCN102487308AGuaranteed Feedback AccuracyReduce Feedback OverheadError prevention/detection by using return channelTelecommunicationsCOMP Measurement
The invention discloses a feedback method of a channel quality index (CQI). The method mainly comprises the following steps that: the user equipment (UE) acquires the CQI of a non-cooperative mode in a current coordinated multi-point transmission / reception (CoMP) measurement set, the CQI when all cells participate in cooperation in the current CoMP measurement set and the average CQI when parts of the cells participate in the cooperation in the current CoMP measurement set, and feeds back the each obtained CQI to a network side; or the UE acquires the independent CQI of the each cell in the current CoMP measurement set and an interference average delta of interference generated by all the cell itself except a main service cell, and feeds back the acquired CQI and the interference average delta to the network side. The invention also discloses a corresponding CQI feedback apparatus. In the invention, the network side obtains all the CQIs under the condition of the cooperation set comprised by the current CoMP measurement set and the CQI during non-cooperative transmission so that the cooperation set which is appropriate for the UE can be accurately determined. Feedback cost can be reduced under the condition of guaranteeing feedback precision.
Owner:ZTE CORP
Mobile communication system
ActiveUS9712213B2Improve communication qualityError prevention/detection by using return channelSite diversityMobile communication systemsComputer science
Owner:MITSUBISHI ELECTRIC CORP
Data acquisition apparatus and method
ActiveUS20100198561A1High computational loadHigh degreeAmplifier modifications to reduce noise influenceDigital computer detailsDigital dataData acquisition
The disclosure concerns a data acquisition apparatus and method. According to the disclosure,a first means providing a series of first digital sampled data (X) at an imperfect sampling frequency (FE) provided by a local clock (2) comprises sigma-delta modulation means (3) arranged to produce said series of first digital sigma-delta modulated data (X),a second gauging means (50) for measuring the frequency error of the local clock (2) in view of a reference clock (6),a third means for correcting the first data based at least on the measured frequency error, which comprises at least an interpolation means (4) to produce second digital data (Y) based on at least an interpolation of said first series (X) and compensating the measured frequency error (FD), and at least a decimation filter (7) for producing third digital data (A) based on said second digital data (Y),are provided.
Owner:SERCEL INC
Method and System for Measurement Report in Coordinated Multi-Point Transmission and Reception System
InactiveUS20130201914A1Reduce signaling overheadSite diversityWireless commuication servicesEngineeringPower measure
A method and system for measurement reporting in a Coordinated Multipoint transmission / reception (CoMP) system are disclosed in the present invention. The method includes: according to a CoMP measurement configuration message sent by a serving cell, when a measurement event report triggering criterion is satisfied, a terminal reporting a measurement report to the serving cell; wherein, the measurement event report triggering criterion includes: a movement speed measurement value of the serving cell being lower than a preset first measurement threshold, and a ratio of a Reference Signal Received Power (RSRP) measurement value of the serving cell to an RSRP measurement value of a measuring cell being lower than a preset second measurement threshold.
Owner:ZTE CORP
Coordinated multi-point (COMP) measurement set notification method and device
The invention discloses a coordinated multi-point (COMP) measurement set notification method and a COMP measurement set notification device. In the method and the device, a coordinated multi-point measurement set to be bed back by user equipment can be determined, and a measurement set indicator can be transmitted to the user equipment according to the determined coordinated multi-point measurement set. By the method and the device, the measurement set for feeding coordinated multi-point cell channel information back can be successfully notified to the user equipment.
Owner:ZTE CORP
Method and device for determining CQI value in coordinated multi-point transmission/reception
ActiveUS8593989B2Reduce Feedback OverheadAccurate valueSite diversityFrequency-division multiplex detailsCorrelation coefficientEngineering
In the invention, a method for determining a channel quality indicator (CQI) value in coordinated multi-point transmission / reception (COMP) is provided, wherein the method comprises the following steps: a receiving side feeds back an independent CQI value or normalized useful signal power of each point of all or part of the points in a COMP measurement set or reporting set to a network side; the receiving side feeds back the correlation coefficient between the channel of each point and the channel of a master serving point to the network side; and the network side determines, according to the correlation coefficient and the independent CQI value of each point or normalized useful signal power, the CQI value used for coordinated multi-point transmission / reception. In the invention, a device is also provided for determining the CQI value in COMP. The feedback overhead is low in the present invention, and a more accurate final CQI value can be obtained through function operation.
Owner:ZTE CORP
Management method and device of multipoint cooperation correlation set
ActiveCN103581992ASolve management problemsContribute to developmentSpatial transmit diversityWireless communicationChannel state informationResource management
In LTE-A release 11 for measuring coordinated multi-point CoMP resources a CoMP resource management set CRMS and a CoMP measurement set CMS is defined (3GPP TR 36.819). The measurement is based on reference signal receiving power RSRP measurement of channel state information - reference signal CSI- RS resource. The measurement set used in a mobile station may be changed by a command (MAC-CE signalling element) from the base station. Problem: There might be situation where after the change the mobile terminal measures CSI-RS resources which are inactive (SCell). This would lead to a waste of energy in the UE. Solution: The UE stops measuring after the change (adding) and continues only after being commanded to by the base station.
Owner:ALCATEL LUCENT SHANGHAI BELL CO LTD +1
Method, system and related apparatus for controlling downlink JT
ActiveCN105323777AGuaranteed transmission rateAvoid occupyingWireless communicationInformation transmissionControl system
An embodiment of the invention discloses a method for controlling downlink JT (Joint Transmission), comprising the steps as follows: a base station receives a CoMP (Coordinated Multiple Points) measurement report event reported by UE (User Equipment) in a first serving cell, wherein the CoMP measurement report event carries adjacent cell information; the base station selects a CoMP adjacent cell of the first serving cell according to the received CoMP measurement report event; and selecting CoMP UE from the UE reporting the CoMP adjacent cell, wherein the sum of a downlink service transmission rate of the selected CoMP UE and a current interactive information transmission bandwidth is not more than a first preset value. The embodiment of the invention also correspondingly discloses a base station and a system for controlling downlink JT. According to the method and the system of the present invention, the CoMP UE is selected to control interactive information transmission bandwidth in a downlink JT technology, thus the problem of limited interactive information transmission bandwidth, which is not considered in the current scheme, can be solved, thereby avoiding downlink JT from occupying transmission resources of other systems, and ensuring downlink service transmission rates of the other systems.
Owner:CHINA MOBILE COMM GRP CO LTD
Multi-point cooperation system and measurement configuration method thereof
ActiveCN102802190AReduce signaling communication qualityImprove data throughputSite diversityWireless communicationTelecommunicationsSignal-to-interference-plus-noise ratio
The invention discloses a multi-point cooperation system and a measurement configuration method thereof. The method comprises the following steps of: enabling a serving cell to configure a channel quality report threshold for UE (user equipment) which is initially accessed; enabling the UE to perform channel quality measurement on neighbor cells, and reporting the neighbor cells with SINR (signal to interference plus noise ratio) values which are not less than the channel quality report threshold to the serving cell; enabling the serving cell to select a cooperative cell from the neighbor cells reported from the UE, and configuring CoMP (cooperative multi-point) measurement information for the UE according to the selected cooperative cell; and enabling the UE to perform CoMP measurement according to the CoMP measurement information, and reporting the cooperative cell with the SINR value which is continuously smaller than the channel quality report threshold to the serving cell through a multi-point cooperation need-to-remove list according to the CoMP measurement result. According to the technical scheme disclosed by the invention, the measurement configuration of a cooperative cell set in a CoMP system can be realized.
Owner:ZTE CORP
Method and equipment for determining transmission scheme in coordinated multi-point(comp) transmission system
The present invention provides a method and equipment for determining transmission scheme in Coordinated Multi-Point (CoMP) transmission system. The method includes the following steps: a service base station transmits report type indication signaling to a mobile station, and appoints candidate transmission schemes; based on the report type indication signaling, the mobile station calculates and reports downlink channel relative information in CoMP measurement group of at least one candidate transmission scheme of appointed candidate transmission schemes; based on the channel relative information reported by the mobile station, the service base station determines the transmission scheme to be adopted; and the service base station notifies the determined transmission scheme to the mobile station. By the method and equipment of the present invention, the switch supporting multiple transmission schemes can be provided and the feedback of frequency selective schedule in the existence of multiple transmission schemes can be supported.
Owner:ALCATEL LUCENT SHANGHAI BELL CO LTD
Feedback and scheduling for coordinated multi-point (CoMP) joint transmission (JT) in orthogonal frequency division multiple access (OFDMA)
A method implemented in a user equipment (UE) used in an orthogonal frequency division multiple access (OFDMA) wireless communications system supporting coordinated multi-point (CoMP) joint transmission (JT) is disclosed. The method includes measuring reference signal received power (RSRP), transmitting, to a network, first feedback on the RSRP, receiving, from the network, a CoMP measurement set, conducting pre-scheduling CoMP UE fallback according to the CoMP measurement set, computing channel quality and direction information according to a UE category, and transmitting, to the network, second feedback on the channel quality and direction information. Other methods, apparatuses, and systems also are disclosed.
Owner:NEC CORP
Dual-channel shared clock trigger delay adjusting device based on PCI bus
ActiveCN110955179ADon't worry about conflictsHigh speedProgramme controlComputer controlPci interfaceEmbedded system
The invention discloses a dual-channel shared clock trigger delay adjustment device based on a PCI bus. The method comprises the following steps: firstly, a clock signal and a trigger signal are provided for a delay adjustment control module through an external clock and a trigger source via a signal input interface; meanwhile, control equipment sends a delay adjustment parameter to the delay adjustment control module through a PCI bus; the delay adjustment parameter is input to a parameter analysis module through a PCI interface of the delay adjustment control module, and finally delay adjustment is performed on the clock signal and the trigger signal according to an analysis value so as to compensate the problem of measurement asynchronization caused by self delay of a measurement system, and thus the measurement synchronization precision of the measurement system is enabled to be higher.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Method and apparatus for chromatic dispersion measurement based on optoelectronic oscillations
ActiveUS20200096417A1Phase-affecting property measurementsOptical apparatus testingWavelength rangeMaterials science
In this invention, a novel technique is introduced to measure chromatic dispersion (CD) in optical fibers. This technique is based on a relatively low-frequency optoelectronic oscillation (OEO) to provide fast, precise and low cost method for CD measurement that can be implemented easily in commercial instruments. In addition, another technique is presented to compensate for fiber thermal fluctuations during measurement which is based on a second simultaneously oscillating OEO. The proposed setup is implemented to measure the CD in normal single mode fibers with lengths of 40 km, 10 km, 1 km. Moreover, it is implemented to measure CD in 400 m of nonzero dispersion shifted fiber to test the system ability to resolve small chromatic delays. The proposed setup can resolve delays less than 0.1 ps / nm (which can be further improved by increasing the oscillation frequency) and measure CD with precision as low as 0.005 ps / nm.km as low as 20 seconds over a wavelength range from 1500 to 1630 nm. Further improvements may be possible by slightly better system design.
Owner:NAT INST OF STANDARDS
Handling compensation for losses in optical fiber links
Systems and methods for measuring accumulated power losses over a fiber link are described in the present disclosure. According to one embodiment, a method includes the step of measuring accumulated losses over a fiber link. The method also includes the step of at least partially compensating for the measured accumulated losses. In response to determining that there is a compensation shortfall with respect to the accumulated losses, the method includes the step of transmitting the compensation shortfall to one or more downstream controllers.
Owner:CIENA
A wave compensation measurement device, measurement method and ocean platform using the same
ActiveCN106882344BReduce the difficulty of heave compensation measurementReduce cost of measurementShip vibration reductionMovement controllersMarine terraceMeasurement device
Owner:KEEN OFFSHORE ENG CO LTD
Temperature compensation method, printed circuit board, compressor and vehicle
ActiveCN111238667AHas all technical effectsWith technical effectThermometer detailsThermometers using electric/magnetic elementsData packTemperature curve
The invention provides a temperature compensation method, a printed circuit board, a compressor and a vehicle. The temperature compensation method comprises the steps of: obtaining a data package, enabling the data package to comprise a plurality of data pairs, enabling each data pair to comprise an associated voltage and a measurement temperature, and enabling the measurement temperature to be calculated through a voltage and voltage temperature relation, performing clustering calculation on the data package to obtain a plurality of central data pairs, and forming a central data pair group bythe plurality of central data pairs, fitting a voltage temperature curve by the central data pair group, and generating a temperature compensation model according to the voltage temperature curve andthe theoretical voltage temperature curve, the temperature compensation model being used for compensating the measurement temperature. According to the temperature compensation method provided by theinvention, the digital signal of the NTC temperature-sensitive resistor is acquired, the data is analyzed by using a signal processing method, and finally, the temperature compensation model for monitoring the temperature in real time is established to compensate the measurement temperature, so that the temperature detection precision can be improved, and the printed circuit board can be protected more effectively.
Owner:安庆威灵汽车部件有限公司 +2
Magnetic hysteresis compensation method, storage medium and intelligent wearable device
The invention discloses a magnetic hysteresis compensation method, a storage medium and an intelligent wearable device. The intelligent wearable device comprises a measurement Hall sensor and a compensation Hall sensor in addition to a wearable device body and an earphone. The measurement Hall sensor is arranged at a base and is used for being aligned with a magnet on the earphone, and the compensation Hall sensor is arranged on the wearable device body and is staggered from the magnet on the earphone and used for detecting a magnetic field of an environment where the compensation Hall sensoris located. The measurement Hall sensor and the compensation Hall sensor are both electrically connected with an MCU, the MCU compensates a magnetic field detected by the measurement Hall sensor according to a compensation magnetic field corresponding to an interference magnetic field detected by the compensation Hall sensor, and the compensated magnetic field serves as a basis of detecting an access state of the earphone, so that magnetic hysteresis of the Hall sensors is removed and the accuracy of actual measured values of the Hall sensors is improved.
Owner:GOERTEK INC
Dynamic measurement method, device and system for track settlement and deviation
The invention provides a dynamic measurement method, device and system for track settlement and deviation. The measuring method comprises the following steps: acquiring a track profile curve picture; in the track profile curve picture, selecting an arc-shaped highest point on a track profile curve as a center, and intercepting a pixel template; calculating the pixel position of the pixel template in the track profile curve picture through template matching; converting according to the pixel position to obtain the actual space physical position coordinate of the pixel template; and calculating the offset and settlement of the orbit according to the change of the actual space physical position coordinate. According to the system, the monitoring result is transmitted in real time, and the measurement of the pull-out lead height value of the contact line is compensated. And the measured data compensates the measured value of the non-contact pull-out lead height, so that the accurate space physical coordinate of the contact line is obtained.
Owner:上海天链轨道交通检测技术有限公司
Method and apparatus for obtaining channel quality indication
ActiveUS9531465B2Accurate methodEffectively relieves the CQI mismatching issueSite diversitySpatial transmit diversityCommunications systemCOMP Measurement
Embodiments of the disclosure provide a method and apparatus for obtaining a CQI in a communication system, wherein the communication system comprises a UE, a CoMP measurement set including more than one BS / point, and one or more outside BSs / points which is outside the CoMP measurement set, and wherein the UE is served by a serving BS / point in the CoMP measurement set and interfered by at least one interfering BS / point in the CoMP measurement set and the one or more outside BSs / points. In the method according to embodiments of the present invention, a first interference from at least one outside BS / point which is outside the CoMP measurement set to the UE is estimated; a second interference from at least one interfering BS / point in the CoMP measurement set to the UE is estimated; and a target CQI based on the first interference and the second interference is obtained.
Owner:NEC CORP
A Power Headroom Reporting Method and Device for Coordinated Multipoint Communication
The invention discloses a coordinated multi-point communication power headroom reporting method and device. The method comprises that user equipment obtains an uplink coordinated multi-point (CoMP) measurement set configured by a serving base station, and the uplink CoMP measurement set contains measurement configuration information of a receiving point (RP); the user equipment estimates the downlink loss according to the uplink CoMP measurement set; and the user equipment generates a power headroom report (PHR) according to the downlink loss and reports the PHR to the serving base station. By employing the above method and device, the user equipment can estimate the downlink loss, PUSCH / PUCCH transmitting power and PH more accurately, the uplink resource can be distributed more accurately, interference is reduced, and the uplink throughput can be increased.
Owner:HUAWEI TECH CO LTD
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