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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 14740. Отображено 100.
19-01-2012 дата публикации

Admission control

Номер: US20120014248A1
Автор: Markus Drevö
Принадлежит: Telefonaktiebolaget LM Ericsson AB

The present invention relates to a network node and a method in a network node for admission control of broadcast transmission sessions. The method comprises receiving a broadcast transmission session start request for a first broadcast transmission session, obtaining at least a first traffic statistics parameter related to said first broadcast transmission session, obtaining the available bit rate for the broadcast transmission area, and obtaining a re-synchronisation parameter indicating the time between re-synchronisation of transmissions for said broadcast transmission session. The method also calculates a first expected bit error rate based on said at least first traffic statistics parameter, said available bit rate and said re-synchronisation parameter, and admits said first broadcast transmission session if said first expected bit error rate is less than a first bit error rate threshold.

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Номер записи: 1
16-02-2012 дата публикации

Receiver apparatus for receiving a multicarrier signal

Номер: US20120039379A1
Автор: Alessio Filippi, Phjm Van Voorthuisen, Sri Andari Husen
Принадлежит: NXP BV

In time varying OFDM systems, the effect of a non-ideal time synchronization may lead to a poor performance in terms of decoded average bit error rate versus the signal-to-noise ratio. The receiver apparatus ( 3 ) of the transmission system ( 1 ) estimates a subcarrier-dependent channel frequency response and determines an intercarrier interference spreading on the basis of a cyclic shift in symbols carried by the subcarriers. Therewith, an intercarrier interference included in an OFDM signal can be canceled, even in case of a non-ideal time synchronization.

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Номер записи: 2
15-03-2012 дата публикации

Systems and methods for averaging error rates in non-volatile devices and storage systems

Номер: US20120066441A1
Автор: Hanan Weingarten
Принадлежит: Densbits Technologies Ltd

A system for storing a plurality of logical pages in a set of at least one flash device, each flash device including a set of at least one erase block, the system comprising apparatus for distributing at least one of the plurality of logical pages over substantially all of the erase blocks in substantially all of the flash devices, thereby to define, for at least one logical page, a sequence of pagelets thereof together including all information on the logical page and each being stored within a different erase block in the set of erase blocks; and apparatus for reading each individual page from among the plurality of logical pages including apparatus for calling and ordering the sequence of pagelets from different erase blocks in the set of erase blocks.

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Номер записи: 3
19-04-2012 дата публикации

Methods and Devices for Transmitting a Control Message

Номер: US20120093118A1
Автор: Gunnar Peters
Принадлежит: Telefonaktiebolaget LM Ericsson AB

Embodiments disclose a method in a first communication device in a radio telecommunications network for transmitting a control message comprising communication configuration information to a second communication device within the radio telecommunications network. The first communication device determines the communication configuration information of the control message and maps the control message to a plurality of control channel element groups for the second communication device. The first communication device then transmits the control message to the second communication device over the plurality of control channel element groups within a single transmission time interval on a radio control channel.

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Номер записи: 4
03-05-2012 дата публикации

System and Method of Communication Using at Least Two Modulation Methods

Номер: US20120106604A1
Автор: Gordon F. Bremer
Принадлежит: SUMMIT Tech SYSTEMS LP

A device may be capable of communicating using at least two type types of modulation methods. The device may include a transceiver capable of acting as a master according to a master/slave relationship in which communication from a slave to a master occurs in response to communication from the master to the slave. The master transceiver may send transmissions structured with a first portion and a payload portion. Information in the first portion may be modulated according to a first modulation method and indicate an impending change to a second modulation method, which is used for transmitting the payload portion. The discrete transmissions may be addressed for an intended destination of the payload portion.

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Номер записи: 5
17-05-2012 дата публикации

System and Method of Detecting and Locating Intermittent Electrical Faults In Electrical Systems

Номер: US20120119753A1
Автор: Charles J. Kim
Принадлежит: Individual

Signals are transmitted from at least one transmitter that is positioned in an electrical network. The signals that have been transmitted are received a single receiver positioned within the electrical network. At the single receiver, the received signals are analyzed and a determination from the analyzing the received signals is made as to whether a fault has occurred in the electrical network and the approximate location of the fault.

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Номер записи: 6
24-05-2012 дата публикации

Computer readable storage medium storing error correction program and communication apparatus

Номер: US20120131408A1
Автор: Atsuko Tada, Ryuta Tanaka
Принадлежит: Fujitsu Ltd

A computer-readable medium storing a program causing a computer to execute a process includes, acquiring a plurality of data units that belong to a first block in a certain hierarchy among hierarchical blocks defined by a plurality of hierarchies; generating error correction information corresponding to the first block that equals to an exclusive-OR of the plurality of data units; generating, in each individual hierarchy of one or more individual hierarchies that are continuous from and are lower than the certain hierarchy, error correction information corresponding to each individual block that equals to the exclusive-OR of all data units that belong to the individual block among the plurality of data units, where the individual block is one or more individual blocks other than one specific block in two or more blocks in the individual hierarchy that are included in the same block in a hierarchy.

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Номер записи: 7
07-06-2012 дата публикации

Communication Quality Estimation Apparatus, Base Station Apparatus, Communication Quality Estimation Method, and Communication Quality Estimation Program

Номер: US20120140661A1
Автор: Satoshi Konishi, Takeo Ohseki
Принадлежит: KDDI Corp

A communication quality estimation apparatus includes a channel information acquisition section for receiving channel quality information indicating channel quality in transmission paths between a plurality of terminal apparatuses and a base station apparatus from the plurality of terminal apparatuses for each subframe, a smoothing calculation section for calculating smoothed channel quality information by smoothing the channel quality information received so far from the terminal apparatus for each terminal apparatus, and a smoothed information storage section for storing the smoothed channel quality information calculated by the smoothing calculation section in association with an identifier of each of the plurality of terminal apparatuses.

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Номер записи: 8
07-06-2012 дата публикации

Method and apparatus for antenna diversity in multi-input multi-output communication systems

Номер: US20120140798A1
Автор: Aamod Khandekar, Alexei Gorokhov, Dhananjay Ashok Gore, Tamer Kadous
Принадлежит: Qualcomm Inc

Transmission schemes that can flexibly achieve the desired spatial multiplexing order, spatial diversity order, and channel estimation overhead order are described. For data transmission, the assigned subcarriers and spatial multiplexing order (M) for a receiver are determined, where M≧1. For each assigned subcarrier, M virtual antennas are selected from among V virtual antennas formed with V columns of an orthonormal matrix, where V≧M. V may be selected to achieve the desired spatial diversity order and channel estimation overhead order. Output symbols are mapped to the M virtual antennas selected for each assigned subcarrier by applying the orthonormal matrix. Pilot symbols are also mapped to the V virtual antennas. The mapped symbols are provided for transmission from T transmit antennas, where T≧V. Transmission symbols are generated for the mapped symbols, e.g., based on OFDM or SC-FDMA. Different cyclic delays may be applied for the T transmit antennas to improve diversity.

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Номер записи: 9
07-06-2012 дата публикации

Received signal to noise indicator

Номер: US20120142390A1
Автор: Joseph A. Kwak
Принадлежит: InterDigital Inc

A method and device may be used to produce a received interference value in wireless communications. The device may include one or more components to measure a received power of a channel and measure an average noise plus interference power of the channel. The device may include a processor configured to calculate a received signal to noise indicator (RSNI) value. The RSNI may be based on the measured received power and the measured average noise plus interference power.

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Номер записи: 10
21-06-2012 дата публикации

Communication system

Номер: US20120155286A1
Автор: Daisuke Yoshikoa
Принадлежит: NEC Corp

A disclosed technology can accurately measures the data frame loss between a pair of communication devices even when link aggregation is present between the communication devices. A communication system includes a transmitting device, receiving device, a plurality of transmitting and receiving links, and a measuring device. The transmitting device duplicates for the same number of times as the number of transmitting and receiving links a data frame loss measurement frame in which the total number of transmitted data frames is written, and then transmits them to the transmitting and receiving links. The receiving device writes the total number of received data frames in the received data frame loss measurement frame. The measuring device measures the data frame loss between the transmitting and receiving devices by subtracting the total number of data frames received by the receiving device from the total number of data frames transmitted by the transmitting device.

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Номер записи: 11
05-07-2012 дата публикации

Pluggable transceiver module with enhanced circuitry

Номер: US20120173935A1
Автор: Daniel Kiernan Kilkenny, David Aaron Skirmont, Kung-Ling Ko, Surya Parkash Varanasi
Принадлежит: Brocade Communications Systems LLC

Pluggable transceiver modules with additional functions and circuitry contained within the module. In a first embodiment, additional circuitry is added to determine bit error rates at the point of the module itself. This allows a much better diagnostic evaluation of location of problem. In an alternate embodiment, various logic is placed in the module. In a first alternate embodiment encryption/decryption units are placed in the converter module so that encryption and decryption operations on the serial bitstream do not need to be performed in a switch. Existing switches can be used but the interconnecting links can still be encrypted. A second alternate embodiment includes compression/decompression units placed in the module to allow effective higher throughput on the selected links.

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Номер записи: 12
12-07-2012 дата публикации

Method and device for user cooperative communication

Номер: US20120176888A1
Автор: Gao Yang Dai, Wai Ho Mow
Принадлежит: Hui Long Fund LLC

A wireless network system and corresponding methodologies that operate in a user cooperative communication system are provided. In operation, the system either combines packets transmitted from a direct channel with packets transmitted from and a relay channel, or uses erroneously relayed packets to assist decoding a direct packet.

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Номер записи: 13
12-07-2012 дата публикации

Downlink flow control by adding noise to a receiver to reduce physical layer throughput

Номер: US20120176922A1
Автор: Brian Clarke Banister, Levent Aydin, Michael L. McCloud, Navid Ehasan, Thomas Klingenbrunn
Принадлежит: Qualcomm Inc

Aspects of the present disclosure relate to wireless communications and techniques and apparatus for downlink flow control at the physical layer of a user equipment (UE). Aspects generally include monitoring one or more parameters related to the UE and intentionally reducing channel quality based on the one or more parameters to trigger downlink flow control. According to aspects, channel quality may be reduced by degrading receiver performance and/or intentionally adding noise to a signal.

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Номер записи: 14
12-07-2012 дата публикации

Method and system for enhancing transmission in a multi-user reusing one single timeslot operation

Номер: US20120176948A1
Автор: Jongsoo Choi, Sarvesha Anegundi Ganapathi, Satish Nanjundaswamy Jamadagni
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A method and system for enhancing transmission in a multi-user reusing one single time slot operation. The method includes detecting a mutual interference in a traffic channel (TCH) by a network. The method also includes transmitting a discontinuous transmission (DTX) start signal by the network to a first electronic device, if the mutual interference is above a predefined value. The method further includes storing a plurality of audio and video samples by the first electronic device for a time period. Further, the method includes transmitting a DTX stop signal by the network to the first electronic device at end of the time period. Moreover, the method includes transmitting the plurality of audio and video samples by the first electronic device to a receiver using the TCH. The system includes a plurality of electronic devices, a network, and a traffic channel (TCH).

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Номер записи: 15
26-07-2012 дата публикации

Efficient uplink transmission of channel state information

Номер: US20120188972A1
Автор: Dennis Hui, Jung-Fu Cheng, Kambiz Zangi, Leonid Krasny
Принадлежит: Individual

A UE in a wireless communication network transmits succinct, direct channel state information to the network, enabling coordinated multipoint calculations such as joint processing, without substantially increasing uplink overhead. The UE receives and processes reference symbols over a set of non-uniformly spaced sub-carriers, selected according to a scheme synchronized to the network. The frequency response for each selected sub-carrier is estimated conventionally, and the results quantized and transmitted to the network on an uplink control channel. The non-uniform sub-carrier selection may be synchronized to the network in a variety of ways.

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Номер записи: 16
09-08-2012 дата публикации

Radio base station, user equipment and methods therein

Номер: US20120202477A1
Автор: Erik Eriksson
Принадлежит: Individual

Embodiments herein relate to a method in a radio base station ( 12 ) for communicating with a user equipment ( 10 ) over a channel structured in transmission time intervals in a radio communications network. The radio base station ( 12 ) identifies an interference situation, associated with a transmission time interval, in the cell ( 15 ) from a set of interference situations. The radio base station ( 12 ) selects a correction value associated with the identified interference situation. Furthermore, the radio base station ( 12 ) determines a radio transmission parameter using the correction value; and transmits information, to the user equipment ( 10 ), based on the radio transmission parameter.

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Номер записи: 17
16-08-2012 дата публикации

Methods and apparatus for wireless coexistence based on transceiver chain emphasis

Номер: US20120207032A1
Автор: Arthur Lin, Camille Chen, Chris Hartman, Chris Zimmermann, Jaime Tolentino, Lei Li, Michael J. Giles
Принадлежит: Apple Inc

Methods and apparatus for reduction of interference between a plurality of wireless interfaces. In one exemplary embodiment, a device having a first (e.g., Wi-Fi) interface and a second (e.g., Bluetooth) interface monitors interference between its interfaces. A reduction in transmit power of the Wi-Fi module causes a disproportionately larger reduction in undesirable interference experienced at the Bluetooth antennas. For example, when the Bluetooth interface detects interference levels above acceptable thresholds, the Wi-Fi interface adjusts operation of one or more of its transmit chains based on various conditions such as duty cycle, Received Signal Strength Indication (RSSI), etc. Various embodiments of the present invention provide simultaneous operation of WLAN and PAN interfaces, without requiring time division coexistence, by reducing power on a subset of interfering antennas.

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Номер записи: 18
23-08-2012 дата публикации

Baseband Recovery in Wireless Networks, Base Transceiver Stations, and Wireless Networking Devices

Номер: US20120213257A1
Автор: Tim Kuechler
Принадлежит: Apple Inc

Baseband recovery in wireless networks, base transceiver stations, and wireless networking devices may be implemented to minimize the number of timing symbols while at the same time enabling wireless devices to use a relatively low per-symbol sampling rate, so that minimal processing is required to implement the timing recovery. In one embodiment, a relatively low number of samples is taken per expected symbol interval during the training sequence. A subset of the samples is selected and processed to determine error signals for each of the samples. The error signals are multiplied by the expected symbol and summed to form an error signal. The error signal is used to adjust the set of samples that will be used and processed in connection with subsequent symbols. The error signal is also used to interpolate between available samples to infinitesimally approach the point of maximum eye opening.

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Номер записи: 19
06-09-2012 дата публикации

Method and apparatus for low complexity compression of signals

Номер: US20120224611A1
Автор: Harinath Garudadri, Pawan Kumar Baheti, Yuejie Chi
Принадлежит: Qualcomm Inc

Certain aspects of the present disclosure relate to techniques for low-complexity encoding (compression) of broad class of signals, which are typically not well modeled as sparse signals in either time-domain or frequency-domain. First, the signal can be split in time-segments that may be either sparse in time domain or sparse in frequency domain, for example by using absolute second order differential operator on the input signal. Next, different encoding strategies can be applied for each of these time-segments depending in which domain the sparsity is present.

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Номер записи: 20
25-10-2012 дата публикации

Systems and method for transmitting data in an advanced metering infrastructure

Номер: US20120268291A1
Автор: Bradley Richard Ree, John Christopher Boot
Принадлежит: General Electric Co

A system for transmitting data in an advanced metering infrastructure (AMI) is provided. The system includes an AMI network configured to communicate by transmitting data via a plurality of physical communication media that include at least a first physical communication medium and a second physical communication medium, and a plurality of meters. Each of the plurality of meters are configured to select a physical communication medium from the first physical communication medium and the second physical communication medium based at least in part on an operational state of the first physical communication medium and an operational state of the second physical communication medium, and communicate with the AMI network via the selected physical communication medium.

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Номер записи: 21
25-10-2012 дата публикации

System and method for simultaneous mimo signal testing with single vector signal analyzer

Номер: US20120269288A1
Автор: Christian Volf Olgaard, Ruizu Wang
Принадлежит: Litepoint Corp

Signal conversion circuitry and method for converting a multiple input, multiple output (MIMO) packet data signal transmission to a plurality of complex data samples for processing by shared test equipment, e.g., a single vector signal analyzer (VSA).

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Номер записи: 22
01-11-2012 дата публикации

Method and apparatus for restricted measuring in a wireless network

Номер: US20120275322A1
Автор: Alan Barbieri, Aleksandar Damnjanovic, Juan Montojo, Tingfang JI
Принадлежит: Qualcomm Inc

Methods and apparatuses are provided that include determining resources over which to measure signals from a base station. One or more parameters related to a resource restriction pattern can be provided to the device for measuring signals over indicated resources. The resource restricted pattern can correspond to a bitmap where each bit relates to a time period over which signals can be transmitted by the base station, and the bit can specify whether a signal received over the resource should be measured. The resource restriction pattern can correspond to a set or protected resources negotiated using a resource partitioning scheme.

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Номер записи: 23
01-11-2012 дата публикации

System and method for adaptive control of an averaging parameter for pcinr and rssi

Номер: US20120275388A1
Автор: Dhaval Dipak MEHTA, Masoud Olfat, Sungki PARK
Принадлежит: Clearwire IP Holdings LLC

A system and method for adaptive control of an averaging parameter in a communications network may include an averaging parameter adaptive control module (APAC) that is associated with a base station and that includes one or more processors configured to generate a first averaging parameter that is transmitted by the base station to a mobile station communicating with the base station. The mobile station may use the first averaging parameter to generate first channel condition information that indicates a condition of a communication channel. First feedback information including the first channel condition information may be received at the base station. The APAC may generate a second averaging parameter using the first averaging parameter and the first feedback information and may transmit the second averaging parameter from the base station to the mobile station, thereby adaptively controlling the second averaging parameter based on the first feedback information.

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Номер записи: 24
01-11-2012 дата публикации

Adaptive modulation and coding scheme adjustment in wireless networks

Номер: US20120276896A1
Автор: Hong Ren, Mircea Dumitrescu, Ping Yu, Xixian Chen
Принадлежит: ROCKSTAR BIDCO LP

In a method of adjusting a modulation and coding scheme (MCS) level for a transmission on a communication channel between a base station and a mobile terminal, at the base station: a target value for an error metric is defined; the error metric is measured; an MCS offset based on a degree of deviation of the measurement of the error metric from the target value is determined; an indication of a channel quality measurement for the communication channel is received from the mobile terminal; a pre-adjusted MCS level corresponding to the indication of the channel quality measurement is determined using a fixed mapping between a set of channel quality levels and a corresponding set of MCS levels; an adjusted MCS level is determined by adding the MCS offset to the pre-adjusted MCS level; and the adjusted MCS level is assigned to the transmission.

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Номер записи: 25
08-11-2012 дата публикации

Information detection method and apparatus for high speed downlink shared control channel

Номер: US20120281542A1
Автор: Haiyong Xiao
Принадлежит: ZTE Corp

An information detection method and apparatus for a High Speed Downlink Shared Control Channel (HS-SCCH) are provided by the present disclosure, implementing the detection of HS-SCCH part1 with low false alarm probability and low false dismissal probability under the arbitrary combination of User Identifiers (UEID). The method is that: rate de-matching the front detection signal of each HS-SCCH part1 in the terminal HS-SCCH monitor set, obtaining the corresponding rate de-matched information; removing the user mask for the rate de-matched information of each HS-SCCH monitor channel; Viterbi decoding each rate de-matched information of which the user mask is removed, obtaining Viterbi-decoding 0 state accumulated metric of each HS-SCCH in HS-SCCH monitor set, and summing the absolute value of the soft information of each HS-SCCH monitor channel respectively, with the soft information being obtained by removing the user mask; according to the Viterbi 0 state accumulated metric of each HS-SCCH and the sum of absolute values of the corresponding soft information, is obtaining determination variables of each HS-SCCH; selecting the maximum from the determination variables of HS-SCCH, comparing the maximum with the preset threshold, and determining whether the HS-SCCH of this user is detected.

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Номер записи: 26
08-11-2012 дата публикации

Method for transceiving channel information, and terminal and base station using same

Номер: US20120281578A1
Автор: Kibum KWON, Kyoungmin Park, Sungjin Suh, Sungkwon Hong
Принадлежит: PANTECH CO LTD

The present description relates to a wireless communication system and to a method for transceiving channel information through carrier aggregation, and a terminal and a base station using the method. The method described in the present description comprises: receiving channel information from a user terminal, and generating a sub-band group from one or more subbands contained in at least one or more component carriers; and receiving, from the user terminal, channel information for each of the sub-band groups through a control channel.

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Номер записи: 27
22-11-2012 дата публикации

Mobile communications network

Номер: US20120294290A1
Автор: Carsten Juncker, Craig John MITCHELL
Принадлежит: Renesas Mobile Corp

A first user terminal receives data during a time slot assigned for simultaneous transmission of data to a first set of at least one user terminal and to a second set of at least one user terminal using time-division multiplexing, estimates the applied power ratio between a first sub-channel to the first set and a second sub-channel to the second set (available power ratios are divided into at least one known region and each applied power ratio belongs to one region), estimates a bit error probability for each of the bursts of the received data; and applies an adaptation process in order to make the estimated bit error probabilities fall into one of bit error probability intervals of a predefined mapping table with a predetermined probability. which determines the bit error probability that is to be reported to a network.

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Номер записи: 28
06-12-2012 дата публикации

Radio link failure detection procedures in long term evolution uplink and downlink and apparatus therefor

Номер: US20120307724A1
Автор: Arty Chandra, JIN Wang, John S. Chen, Stephen E. Terry
Принадлежит: Nufront Mobile Communications Tech Co Ltd

A method and apparatus for detecting a radio link (RL) failure for uplink (UL) and downlink (DL) in a long term evolution (LTE) wireless communication system including at least one wireless transmit/receive unit (WTRU) and at least one evolved Node-B (eNodeB) are disclosed. A determination is made as to whether an RL has an in-synchronization status or an out-of-synchronization status. An RL failure is declared if an out-of-synchronization status is detected.

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Номер записи: 29
13-12-2012 дата публикации

Closed Loop Precoding Weight Estimation

Номер: US20120314798A1
Автор: Arne Simonsson, Henrik Asplund, Jonas FRÖBERG OLSSON, Peter Ökvist
Принадлежит: Telefonaktiebolaget LM Ericsson AB

Embodiments herein relate to a method in a first communication node ( 201 ) for estimating pre-coding weights for transmission on a radio channel ( 205 ) between the first node ( 201 ) and a second communication node ( 203 ) in a communication network ( 200 ). The first node ( 201 ) comprises at least two transmit antennas. Each transmit antenna is configured to transmit on each of at least two sub-bands. The first node ( 201 ) obtains at least two pre-coding reports. Each pre-coding report is for a different time instance. Each pre-coding report comprises pre-coding weights or indications to pre-coding weights. The pre-coding weights are associated with each transmit antenna and with each sub-band. For each transmit antenna, the first node ( 201 ) estimates pre-coding weights for at least one of the sub-bands based on the pre-coding weights in the obtained pre-coding reports. The estimated pre-coding weights are different from a most resent of the obtained pre-coding reports.

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Номер записи: 30
03-01-2013 дата публикации

Method for testing a radio frequency (rf) receiver and related methods

Номер: US20130003810A1
Автор: Michael Certain, Perry Jarmuszewski, Qingmai Zhou, Yihong Qi
Принадлежит: Research in Motion Ltd

A method for testing a radio frequency (RF) receiver may include measuring a plurality of bit error levels for the RF receiver at a given RF frequency. The method may further include applying a Huber function to the measured plurality of bit error levels to generate a bit error ratio (BER) estimate for the RF receiver. The method would also include using the BER estimate to generate a sensitivity for the RF receiver.

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Номер записи: 31
17-01-2013 дата публикации

Method and apparatus for determining channel state information

Номер: US20130016767A1
Автор: Andreas Bury, Johan Pean
Принадлежит: INTEL MOBILE COMMUNICATIONS TECHNOLOGY DRESDEN GMBH

A mobile station receiving a signal from a base station experiences time/frequency varying channel conditions. In order to get the maximum throughput from a base-station, it is necessary to adjust the modulation and coding schemes to the actual channel quality. To do so, mobile receivers are required to probe the radio channel condition and feedback a limited set of estimated channel state information parameters such as CQI, RI, and PMI. The invention uses modulation-specific mutual information as a basic metric for CQI-PMI-RI computation to yield high bandwidth efficiency under both flat fading and interference conditions as well as time and frequency selective fading and interference conditions, at reasonable complexity.

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Номер записи: 32
17-01-2013 дата публикации

Method for data packet processing at very high data rates and extremely poor transmission conditions

Номер: US20130019129A1
Автор: Mirko Lawin
Принадлежит: Individual

Provided are systems and methods for adaptive, error-tolerant pattern recognition in the transmission of digital data packets, in which an actual data pattern, including several bits, is detected and is compared with a theoretical data pattern; erroneous and/or correctly recognized bits are detected; erroneous and/or correctly recognized bits are added up (in each case); and the error sum (number of the errors) of the added-up erroneous bits is compared with a specifiable and changeable admissible maximum number of errors.

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Номер записи: 33
24-01-2013 дата публикации

Method for and apparatus for feeding back channel information in wireless communication system

Номер: US20130021931A1
Автор: Chae-Man Lim, Joo-Han Kim, Tae-Yoon Kim
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A method and an apparatus for feeding back channel information in a wireless communication system are provided. The method includes calculating an average Signal to Interference and Noise Ratio (SINR), determining a Modulation and Coding Scheme (MCS) level corresponding to the average SINR, determining an MCS level meeting a predefined condition among MCS levels equal to or less than the determined MCS level, and reporting a channel quality indicator representing the determined MCS level to a base station.

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Номер записи: 34
24-01-2013 дата публикации

Ultra-wideband communication system and method

Номер: US20130022081A1
Автор: John Santhoff, Steven Moore
Принадлежит: Intellectual Ventures Holding 73 LLC

The present invention provides systems and methods for communication between ultra-wideband (UWB) devices. In general, the UWB device may characterize the attenuation, and other characteristics of the communication environment. Using these characteristics the UWB device can adapt various communication parameters to improve the communication quality. The UWB device may use these characteristics to establish zones and sectors for communication with other UWB devices. Based on this zone and sector assignment the UWB device may select communication parameters for communication with other UWB devices. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the subject matter of the disclosure contained herein. This Abstract is submitted with the explicit understanding that it will not be used to interpret or to limit the scope or the meaning of the claims.

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Номер записи: 35
24-01-2013 дата публикации

Transmission system

Номер: US20130024750A1
Автор: Hiroaki Kataoka, Shinya Kamada
Принадлежит: NEC Corp

When a first communication device receives a predetermined message from a second communication device via a third line (L 3 ) in a state of transmitting frames to a first line (L 1 ) while performing error-correction coding on the frames, the first communication device switches the line used for transmission from L 1 to the second line (L 2 ), then transmits a frame of a post-switching message to L 1. The second communication device receives frames from L 1 and L 2 and performs error correction, stores the frames, on which error correction has been performed, in first and second buffers (B 1, B 2 ), and when determining that it is necessary to perform line switching based on the status of error correction with respect to the frames received from L 1, transmits a predetermined message to L 3, and when receiving the frame of the post-switching message from L 1, starts reading frames from B 2 after reading all frames stored in B 1.

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Номер записи: 36
28-02-2013 дата публикации

Wireless communication apparatus and interference avoidance method

Номер: US20130051318A1
Автор: Ryoko Matsuo, Takeshi Tomizawa, Tomoko Adachi, Tomoya Tandai
Принадлежит: Toshiba Corp

According to one embodiment, a wireless communication apparatus in a first wireless system is provided with first, second and third units, and a controller. The first unit transmits frames over a frequency channel using a short or long IFS as compared with a specific one used in a second wireless system with a communication range wider than the first wireless system. The second unit receives frames over the channel. The third unit determines an error characteristic in the received frames and/or a busy status of the channel. The controller controls at least either one of whether to change the frequency channel or not, and whether to change a duration of an interframe space or not.

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Номер записи: 37
28-02-2013 дата публикации

Information reporting method, base station and user equipment

Номер: US20130051349A1
Автор: YAN Cheng, Yongxia Lv
Принадлежит: Huawei Technologies Co Ltd

A information reporting method, base station and user equipment is provided in this invention. The method comprises sending the MAC layer carrier activation signaling to the UE, for activating a first CC of the UE, the MAC layer carrier activation signaling comprising CQI instruction information, for instructing the UE to report aperiodic CQI information of a second CC of the UE, so that the UE triggers to report aperiodic CQI information of the second CC of the UE upon receiving the MAC layer carrier activation signaling. With the information reporting method, base station and user equipment provided in an embodiment of this invention, the problem of slower report of CQI information of activated CCs can be addressed.

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Номер записи: 38
04-04-2013 дата публикации

Methods for robust wireless communication for nodes located in vehicles

Номер: US20130083674A1
Автор: Vivek Jain
Принадлежит: ROBERT BOSCH GMBH

A communication method for a wireless communication network in a vehicle is disclosed where the network includes a plurality of sensor nodes and a receiving node. The method includes wirelessly transmitting first sensor data from a first sensor node and second sensor data from a second sensor node using first and second frequency channels, and receiving the first and second sensor data at the receiving node. The method can include rearranging the order of transmitting sensor data, and aggregating sensor data at the sensor nodes. The method can include testing the quality of the wireless links; and using the links with the best quality whether indirect or direct links. The receiving node can simultaneously receive data from more than one node using different frequencies. The nodes can transmit data in parallel using different frequencies. The network can include helper nodes. The wireless communication network can be designed as a tree.

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Номер записи: 39
18-04-2013 дата публикации

Method and Arrangement for Detecting a Channel Quality Offset

Номер: US20130094388A1
Автор: Anders Furuskar, Magnus Lundevall, Per Skillermark
Принадлежит: Telefonaktiebolaget LM Ericsson AB

A method and an arrangement in a first radio network node for determining a channel quality offset for a radio channel for sending data from the first radio network node to a user equipment are provided. The first radio network node receives from the user equipment channel quality information for the radio channel. The first radio network node estimates resource utilization and signal-to-noise-ratio for the user equipment. The first radio network node determines the channel quality offset based on the received channel quality information, the estimated resource utilization and the estimated signal-to-noise-ratio.

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Номер записи: 40
18-04-2013 дата публикации

Method and apparatus for lte radio link failure determiniation in drx mode

Номер: US20130095818A1
Автор: Charles A. Dennean, Guodong Zhang, Jean-Louis Gauvreau, Joseph S. Levy, Paul Marinier, Peter S. Wang, Shankar Somasundaram, Stephen E. Terry, Ulises Olvera-Hernandez
Принадлежит: InterDigital Patent Holdings Inc

A method and apparatus for detecting radio link failure (RLF) in a wireless transmit receive unit (WTRU) includes the WTRU performing a series of radio link measurements during a discontinuous reception (DRX) on-duration, comparing each of the series of radio link measurements to a threshold, and determining that the series of radio link measurements indicates an out-of-synch condition.

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Номер записи: 41
25-04-2013 дата публикации

Method for Transmitting Data Between a Radio Transmitting Device and a Radio Receiving Device

Номер: US20130101061A1
Автор: Thorsten Clevorn
Принадлежит: Intel Mobile Communications GmbH

A method for transmitting data between a radio transmitting device and a radio receiving device includes transmitting a frame structure over a radio channel, the frame structure including a control channel and a data channel. The method further includes detecting a quality degradation of the radio channel, selecting a bit from the data channel and increasing a transmission power of the selected bit when the quality degradation of the radio channel is detected.

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Номер записи: 42
06-06-2013 дата публикации

Frequency agility for wireless embedded systems

Номер: US20130142074A1
Автор: Ankit Tiwari, Luiz Fernando Huet De Bacellar, Richard Gonchar
Принадлежит: UTC Fire and Security Corp

A method for frequency agility in a wireless embedded system, the wireless embedded system comprising a WAP and a WEP communicating on a current channel, includes determining a first channel table comprising an order of available channels for the WAP; determining a second channel table for WEP, wherein the first channel table and the second channel table list the available channels in the same order; in the event interference is detected by the WAP on the current channel, determining a new current channel by testing the available channels for interference in the order listed in the first channel table; and in the event the WEP does not receive an acknowledgement from the WAP of a message sent by the WEP to the WAP, resending the message on each of the available channels in the order listed in the second channel table until an acknowledgement is received from the WAP.

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Номер записи: 43
06-06-2013 дата публикации

Method and a device for reporting the number of correctly decoded transport blocks in a wireless system

Номер: US20130142137A1
Автор: Benoist Sebire, Harri Jokinen
Принадлежит: Core Wiresless Licensing SARL

A method and a device for reporting the number of correctly decoded transport blocks in a wireless system. The maximum number of correctly decoded transport blocks within a reporting period is determined. Then the actual number of correctly decoded transport blocks is determined and cultivated into an indication thereof on the basis of the maximum number. The indication is sent to a network element capable of decoding it for analysis.

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Номер записи: 44
13-06-2013 дата публикации

Component carrier uplink maximum transmission power reporting scheme for carrier aggregation

Номер: US20130148560A1
Автор: Rongzhen Yang, Xiangying Yang
Принадлежит: Individual

Embodiments of the present disclosure describe method, apparatus, and system configurations for reporting uplink maximum transmission power for each component carrier of a carrier aggregation scheme. A method includes establishing, by a user equipment (UE), a communication link with an enhanced node B (eNB) station of an Internet Protocol (IP) based wireless communication network, and sending, by the UE to the eNB station, a message that includes information for a Power Headroom Report (PHR) and a value that indicates an uplink maximum transmission power P CMAX,c for individual active component carriers of a carrier aggregation scheme. Other embodiments may be described and/or claimed.

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Номер записи: 45
20-06-2013 дата публикации

Adaptive forward error correction in passive optical networks

Номер: US20130156420A1
Автор: Assaf Amitai, David Avishai, Eli Elmoalem
Принадлежит: Broadlight Ltd

A method for an adaptive forward error correction (FEC) in a passive optical network. The method comprises selecting an initial downstream FEC code to be applied on downstream data transmitted from an optical line terminal (OLT) to a plurality of optical network units (ONUs) of the PON; communicating the selected downstream FEC code to the plurality of ONUs; receiving at least one downstream bit error ratio (BER) value from at least one ONU of the plurality of ONUs, wherein the downstream BER value is measured respective to downstream data received at the at least one ONU; changing the selected downstream FEC code to a new downstream FEC code based on a plurality of downstream BER values measured by the at least one ONU; and communicating the new downstream FEC code to the plurality of ONUs.

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Номер записи: 46
20-06-2013 дата публикации

Parallel Data Communications Mechanism Having Reduced Power Continuously Calibrated Lines

Номер: US20130159761A1
Автор: Frank D. Ferraiolo, Michael B. Spear, Steven J. Baumgartner, Susan M. Eickhoff
Принадлежит: International Business Machines Corp

A communications link includes multiple continuously calibrated parallel lines, wherein one or more lines are at least partially powered down while being continuously calibrated to reduce power consumption. In one aspect, at least N+1 lines (where N is the logical bus width) are periodically recalibrated, and at least one redundant line is powered down between calibrations. The redundant line could be either a true spare available for use as a replacement, or an extra line which carries functional data while other lines are being calibrated in turn. In another aspect, the logical bus width is variable, but does not exceed N MAX . When N<N MAX , lines not carrying functional data are partially powered down between calibrations.

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Номер записи: 47
27-06-2013 дата публикации

Encoder

Номер: US20130163654A1
Автор: Hitoshi Nakamura
Принадлежит: Canon Inc

An encoder ( 10 ) includes a sensor ( 1 ) configured to illuminate light on a single scale ( 100 ) to detect two phase signals having periods different from each other, an error signal generator ( 2 ) configured to arrange accumulated amounts of phase changes of the two phase signals when the scale ( 100 ) and the sensor ( 1 ) are relatively displaced from each other by a predetermined displacement so as to obtain two accumulated phase signals and to obtain a difference between the two accumulated phase signals so as to generate an error signal that is obtained by removing an accumulated phase component corresponding to the predetermined displacement, and an interpolation error detector ( 3 ) configured to average the error signal by using at least one of periods of the two phase signals so as to detect an interpolation error contained in at least one of the two phase signals.

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Номер записи: 48
11-07-2013 дата публикации

Method and apparatus for detecting radio link failure in wireless communication system

Номер: US20130176862A1
Автор: Cheol Gwak, Jin Sook Ryu
Принадлежит: LG ELECTRONICS INC

A method and apparatus of detecting a radio link failure in a wireless communication system is provided. A mobile station initializes a radio link failure (RLF) counter for detecting the radio link failure and determines whether decoding of a message on a downlink channel is successful. The mobile station decrements a value of the RLF counter if the decoding fails, and increments the value of the RLF counter if the decoding is successful, and declaring the radio link failure if the value of the RLF counter is less than or equal to a specific value. A decrement size of the value of the RLF counter varies according to a received signal strength of the downlink channel.

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Номер записи: 49
25-07-2013 дата публикации

Joint source channel decoding using parameter domain correlation

Номер: US20130188758A1
Автор: Robert W. Zopf
Принадлежит: Broadcom Corp

Methods, systems, and apparatuses are provided for performing joint source channel decoding in a manner that exploits parameter domain correlation. Redundancy in speech coding and packet field parameters is exploited to generate conditional probabilities that a decoder utilizes to perform joint source channel decoding. The conditional probabilities are based upon correlations of parameters of a current frame with parameters of the same or other frames or historical parameter data. Parameter domain correlation provides significant channel decoding improvement over prior bit domain solutions. Also provided are methods, systems, and apparatuses for utilizing received statistics of monitored data bits from which conditional probabilities are generated to perform channel decoding. The techniques described may be implemented at the decoder side and thus do not interfere with transmission standards.

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Номер записи: 50
08-08-2013 дата публикации

RATE MATCHING FOR A WIRELESS COMMUNICATIONS SYSTEM

Номер: US20130201886A1
Автор: Spencer Paul S., Winstok Amir
Принадлежит: Marvell International Ltd.

Apparatuses and methods are provided for generating a plurality of redundancy versions using various rate matching algorithms. In some embodiments, a rate matcher is provided that allocates systematic and parity bits to the redundancy versions in a manner that allows all of these bits to be transmitted in at least one redundancy version. In some embodiments, the rate matcher uses a first puncturing algorithm to generate both a first redundancy version and a third redundancy version, but allocates a different proportion of the systematic bits to these redundancy versions. In these embodiments, the second redundancy version may include only bits that were not transmitted in the first redundancy version. 1. A method of transmitting a message over a wireless communications network , the method comprising:encoding the message using a Turbo code to produce encoded data, the encoded data comprising a plurality of systematic bits and a plurality of parity bits;selecting, for transmission over the wireless communications network, a first subset of the systematic bits using a first puncturing algorithm and a first parameterized swap value;generating a first redundancy version of the message that has a predetermined number of bit positions, the first redundancy version including the first subset of the systematic bits, wherein unused bit positions of the first redundancy version are allocated to a first subset of the parity bits;selecting, for transmission over the wireless communications network, a second subset of the systematic bits that has substantially all of the systematic bits corresponding to the message that are not included in the first subset of the systematic bits;generating a second redundancy version of the message that has the predetermined number of bit positions, the second redundancy version including the second subset of systematic bits, wherein unused bit positions of the second redundancy version are allocated to a second subset of parity bits that is ...

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Номер записи: 51
15-08-2013 дата публикации

Sector Based HS-DPCCH Transmission for Multi-flow HSDPA Transmissions

Номер: US20130208706A1
Автор: Johan Hultell, Peter von Wrycza
Принадлежит: Telefonaktiebolaget LM Ericsson AB

There is provided a method of transmitting feedback information from a mobile terminal in a wireless communication system. The feedback information relates to multi-flow High-Speed Downlink Packet Access, HSDPA, transmissions to the mobile terminal from cells belonging to multiple cell sectors. The cell sectors are sometimes simply referred to as sectors. The method comprises transmitting multiple High-Speed Dedicated Physical Control Channels, HS-DPCCHs, one HS-DPCCH for each sector, such that different HS-DPCCH channels are used to carry feedback information for cells that belong to different sectors. This opens up for a more flexible HS-DPCCH solution, allowing multiple HS-DPCCHs. In this way, the relevant time budget(s) for the mobile terminal and/or base station may be retained or conserved even for multi-flow HSDPA transmission scenarios, thus avoiding re-transmissions of data.

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Номер записи: 52
15-08-2013 дата публикации

Optical communication apparatus

Номер: US20130209092A1
Автор: Shoichi Sato
Принадлежит: Mitsubishi Electric Corp

An apparatus has frame loss detecting unit 14 for detecting frame loss of a data frame; dispersion amount control request transmission device for transmitting, when the frame loss detecting device 14 detects the frame loss in an undetected state of an input break of an optical signal by optical input break detecting unit 13 , an optical signal of a dispersion amount control request pattern to the opposite apparatus at a bit rate lower than that for transmitting the optical signal of the data frame until the frame loss becomes undetected state; and dispersion amount control request receiving device for receiving the optical signal of the dispersion amount control request pattern transmitted from the opposite apparatus, wherein dispersion compensator 21 controls the dispersion amount of transmission line between the apparatus and the opposite apparatus when the dispersion amount control request receiving device receives the optical signal of a specific pattern.

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Номер записи: 53
22-08-2013 дата публикации

DATA PROCESSING DEVICE AND METHOD FOR ANALYZING STABILITY OF DATA PROCESSING DEVICE

Номер: US20130215944A1
Автор: HSU SHOU-KUO, LEE CHENG-HSIEN
Принадлежит: HON HAI PRECISION INDUSTRY CO., LTD.

In a data processing device and a method for analyzing stability of the data processing device, one or more sets of equalization parameters and a predetermined bit error ratio (BER) are received. Times and voltages of data points that represent a waveform of an electronic signal generated by the data processing device are read, and an output type of the electronic signal is selected to obtain a time interval of outputs of the electronic signal. Optimal equalization parameters are selected from the one or more sets of equalization parameters to compute a sample interval. Interfering voltages of the electronic signal are computed to select a frequency which is equal to the predetermined BER, and the interfering voltages corresponding to the selected frequency are obtained. An eye pattern is established using the interfering voltages corresponding to the selected frequency, and a determination is made according to the eye pattern. 1. A method for analyzing stability of a data processing device , the method being performed by execution of computer readable program code by a processor of the data processing device , the method comprising:receiving one or more sets of equalization parameters and a predetermined bit error ratio (BER) from an input device of the data processing device;loading an output file which includes times and voltages of data points that represent a waveform of an electronic signal generated by the data processing device;reading the times and the voltages from the output file;selecting an output type of the electronic signal to obtain a time interval of outputs of the electronic signal;selecting optimal equalization parameters from the one or more sets of equalization parameters by computation according to the times, the voltages at the times, and the time interval;computing a sample interval according to the predetermined BER and the time interval of outputs of the electronic signal;computing interfering voltages of the electronic signal according to ...

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Номер записи: 54
29-08-2013 дата публикации

Mitigation of false pdcch detection

Номер: US20130223252A1
Автор: Yona Perets
Принадлежит: Marvell International Ltd

A method includes receiving in a communication terminal a signal, which is transmitted in multiple links and which includes a control channel transmitted in an assigned sequence of the links. One or more candidate sequences of the links, which are likely to be the assigned sequence, are identified. For at least, one candidate sequence, a verification is made whether the candidate sequence is the assigned sequence, by re-encoding decoded bits of the candidate sequence to produce regenerated symbols and comparing the regenerated symbols to respective received symbols from which the decoded bits were decoded. The control channel is decoded from the candidate sequence in response to verifying that the candidate sequence is the assigned sequence.

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Номер записи: 55
29-08-2013 дата публикации

Method and Device for Determining a Quality of a Clock Signal

Номер: US20130223496A1
Автор: Buhl Michael Bernhard, Obradovic Dragan, STEINDL Günter, Wolfrum Philipp
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

Method, device and system for detecting a disturbance, e.g., at least one short mechanical impact (shock or vibration) on a clock of a slave device by detecting a non-typical variation of a tracking error, i.e., a tracking error having a deviation that exceeds a predetermined threshold, wherein such a non-typical variation can be determined by the deviation from a statistical measure, e.g., a variance or a standard deviation, such that the determination of the quality of a clock signal is advantageously allowed and thus suitable counter-measures are provided. The method, device and system are applicable for all kinds of technical systems comprising slave devices that have a clock, e.g., devices in industrial and automation systems. The method, device and system are also applicable in communication systems that use a protocol to synchronize the clocks of its devices, e.g., Profinet. 1. A method for determining a quality of a clock signal in a slave device , comprising:determining a statistical measure for a tracking error; anddetermining a quality of the clock signal based on a deviation of the tracking error from the statistical measure.2. The method according to claim 1 , wherein the statistical measure comprises at least one of a variance and a standard deviation.3. The method according to claim 2 , wherein the at least one of the variance and the standard deviation is determined based on a filter function.4. The method according to claim 3 , wherein the filter function is in accordance with the relationship:{'br': None, 'i': z', 'k', '−a', 'z', 'k−', 'a·e', 'k, 'sub': 'T', 'sup': '2', '()=(1)·(1)+()'}{'sub': 'T', 'claim-text': {'br': None, 'i': e', 'z', 'k, 'sub': 'T', 'σ()=√{square root over (())}'}, 'VAR(e)=z(k),'}{'sub': T', 'T', 'T, 'where eis a tracking error, σ(e) is a standard deviation of the tracking error, VAR(e) is a variance of the tracking error, k is a step and a is a parameter of the filter.'}5. The method according to claim 1 , wherein a ...

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Номер записи: 56
05-09-2013 дата публикации

METHOD AND APPARATUS FOR ANALYZING AND MITIGATING NOISE IN A DIGITAL SUBSCRIBER LINE

Номер: US20130230084A1
Автор: CIOFFI John M., Ginis Georgios, Jagannathan Sumanth, Rhee Wonjong
Принадлежит:

Data indicative of a level of stability of a DSL link is received. Based on the received data, it is determined whether the data indicates a level of stability of the DSL link that is above or below a minimum threshold. If the level of stability of the DSL link is below the minimum threshold, die noise associated with the DSL link before the time of failure is compared with the noise associated with the DSL link after the time of failure. If the difference between the noise before and after the time of failure exceeds a threshold, then the difference in noise is characterized as a stationary noise associated with the DSL link. However, if the difference between the noise before and after the time of failure is below the threshold, a determination is made whether the failure is associated with a loss of power to the DSL link or a severe impulse noise event—the difference in noise is characterized accordingly. Finally, the characterization of the noise associated with the DSL link is preserved for subsequent possible reconfiguration of the DSL link to improve link stability. 1. A computer-implemented method of characterizing noise associated with a digital subscriber line (DSL) link , comprising:receiving at a controller data indicative of a level of stability of the DSL link;determining at the controller whether the data indicates a level of stability of the DSL link that is above or below a minimum threshold; comparing a noise level associated with the DSL link before a time of failure with a noise level associated with the DSL link after the time of failure;', 'if a difference between the noise level before and after the time of failure exceeds a threshold, then characterizing the noise as a stationary noise associated with the DSL link;', 'if the difference between the noise level before and after the time of failure is below the threshold, investigating whether the failure is associated with a loss of power to the DSL link or a severe impulse noise event and ...

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Номер записи: 57
19-09-2013 дата публикации

Measurement of I/Q Impairments from a Sampled Complex Signal

Номер: US20130243060A1
Автор: Behnke Christopher J., Dark Stephen L.
Принадлежит: National Instruments Corporation

Systems and methods for measuring transmitter and/or receiver I/Q impairments are disclosed, including iterative methods for measuring transmitter I/Q impairments using shared local oscillators, iterative methods for measuring transmitter I/Q impairments using intentionally-offset local oscillators, and methods for measuring receiver I/Q impairments. Also disclosed are methods for computing I/Q impairments from a sampled complex signal, methods for computing DC properties of a signal path between the transmitter and receiver, and methods for transforming I/Q impairments through a linear system. 1. A computer-implemented method for estimating I/Q impairment information associated with a sampled complex signal produced by a receiver , the method comprising:{'sub': 'I', '(a) computing a transform value Cat frequency f of an I component of the sampled complex signal, wherein the sampled complex signal is a baseband signal produced by the receiver in response to the receiver being stimulated with a stimulus signal having an isolated tone at displacement frequency f and a void interval at displacement frequency −f, wherein displacement frequencies f and −f are displacements with respect to a local oscillator frequency of the receiver;'}{'sub': 'Q', '(b) computing a transform value Cat frequency f of a Q component of the sampled complex signal;'} {'sub': I', 'Q, 'computing a gain imbalance g of the sampled complex signal at frequency f based on magnitudes of the values Cand C, wherein the gain imbalance g includes a gain imbalance of the receiver; and'}, '(c) performing one or more of{'sub': I', 'Q, 'computing a phase skew φ of the sampled complex signal at frequency f based on phases of the values Cand C, wherein the phase skew φ includes a phase skew of the receiver.'}2. The method of claim 1 , wherein the gain imbalance g and/or the phase skew φ include an effect of I/Q impairments of a device that generates the stimulus signal.3. The method of claim 1 , wherein the ...

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Номер записи: 58
03-10-2013 дата публикации

Method for reporting channel state information in wireless communication system and device therefor

Номер: US20130258992A1
Автор: Daewon Lee, Hanbyul Seo
Принадлежит: LG ELECTRONICS INC

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for reporting channel state information, wherein the method comprises the steps of: receiving, from a first eNode B, a plurality of pieces of configuration information for a periodic report of CSIs that are set according to each eNode B; and transmitting, to said first eNode B, CSIs for the downlink of the corresponding eNode Bs through subframes that are periodically set according to each piece of the configuration information, wherein the subframes that are periodically set according to the configuration information for said first eNode B are used to transmit a CSI for the downlink of said first eNode B, and at least a portion of subframes that are periodically set according to configuration information for a second eNode B is used to transmit information which indicates the relationship between the downlink of said first eNode B and the downlink of said second eNode B.

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Номер записи: 59
03-10-2013 дата публикации

Information processing apparatus, testing method, and computer-readable recording medium having stored therein testing program

Номер: US20130259100A1
Автор: Teruaki Ichikawa
Принадлежит: Fujitsu Ltd

A first transmitting device includes: a controller that generates setting information concerning transmission and reception of data in the first and second transmitting devices and transmits the generated setting information to the second transmitting device; a detector that detects whether an error is included in data which is transmitted from the second transmitting device and received based on the setting information; and a storage unit that stores information on the error detected by the detector. A second transmitting device includes: a setting unit that sets transmission of data to be transmitted to the first transmitting device based on the setting information received from the controller; and a generator that generates data in accordance with the setting by the setting unit to transmit the data to the first transmitting device.

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Номер записи: 60
24-10-2013 дата публикации

METHOD AND APPARATUS FOR IMPLEMENTING A HIGH-RELIABILITY LOAD BALANCED EASILY UPGRADEABLE PACKET TECHNOLOGY

Номер: US20130279321A1
Автор: EHLINGER JAMES C., Gilboy Christopher P., Gudelis Marius Jonas
Принадлежит:

A network is defined with several alternative softswitches/proxies, which may be used for communication. Each softswitch/proxy has a unique Internet Protocol (IP) address. The softswitches/proxies receive configuration data from a centralized user-profile server, which maintains user-profile information. A centralized call-detail record (CDR) server is connected to each softswitch/proxy and maintains CDRs on each user on each softswitch/proxy. Based on the network configuration, an end-device configuration system generates a provisioning file. The provisioning file includes the IP addresses of each softswitch/proxy. The provisioning file is communicated to user devices. Each user device accesses the provisioning file and uses the IP address for communication. Should the communication fail for any reason, the user device may autonomously access the provisioning file and initiate another call using the next IP address in the provisioning file. 1. A network comprising:a user profile server storing user profile information;a first switch comprising a first internet protocol address in communication with the user profile server and storing first configuration data in response to the user profile information stored in the user profile server;a second switch comprising a second Internet protocol address in communication with the user profile server and storing the first configuration data in response to the user profile information stored in the user profile server; and generating a provisioning file including the first internet protocol address and the second internet protocol address, wherein the first internet protocol address is different from the second internet protocol address; and', 'sending the provisioning file to a user device comprising a telephone, wherein the provisioning file instructs the user device to initiate a first call to the first internet protocol address and when the call is not completed, to initiate a second call to the second internet protocol ...

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Номер записи: 61
24-10-2013 дата публикации

Methods and devices for estimating channel quality

Номер: US20130279634A1
Автор: Fredrik Nordström, Matthias Kamuf, Niklas Andgart
Принадлежит: Telefonaktiebolaget LM Ericsson AB

The invention relates to a method performed in a user equipment for estimating channel quality. The user equipment is adapted to operate in a multiple input multiple output (MIMO) mode in a communication system comprising a base station node supporting MIMO and serving the user equipment. The method comprises: receiving, from the base station node, a reference signal; performing joint demodulation of the reference signal, thereby obtaining soft values; and generating the channel quality using the soft values. The invention also relates to a user equipment, computer programs and computer program products.

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Номер записи: 62
31-10-2013 дата публикации

Spectrum analysis capability in network and/or system communication devices

Номер: US20130286855A1
Автор: Bruce J. Currivan, Harold Raymond Whitehead, Roger Fish, Thomas J. Kolze
Принадлежит: Broadcom Corp

Spectrum analysis (SA) capability is included in various communication devices within a communication network. One or more of the devices use the SA information from other devices in the system to determine status of various communication links were devices in the system. One or more processors within one or more devices can identify any actual/existing or expected failure or degradation of the various components within the system. Such components may include communication devices, communication channels or links, interfaces, interconnections, etc. When an actual/existing or expected failure or degradation is identified, the affected components may be serviced or devices within the system may operate to mitigate any reduction in performance caused by such problems. Such SA functionality/capability may be implemented in one communication device or in a distributed manner across a number of devices in a communication system.

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Номер записи: 63
31-10-2013 дата публикации

Method and device for transmitting a signal using a transmission power mask

Номер: US20130287074A1
Автор: Hervé Milleret, Olivier Isson
Принадлежит: MStar Semiconductor Inc Taiwan

Method for transmitting a signal using a transmission power mask is disclosed. The signal is transmitted by a transceiver A and is connected to a transceiver B via at least one physical link; wherein the transmission power mask is adapted according to a transfer function relative to the impedance of the physical link, so as the power lost during signal transmission is taken into account

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Номер записи: 64
07-11-2013 дата публикации

REDUNDANT CONTROL DEVICE AND NETWORK SYSTEM

Номер: US20130294227A1
Автор: FUKUZAKI Shohei, WATANABE Ken
Принадлежит: ALAXALA NETWORKS CORPORATION

Network repeaters which each implement a redundant switching function previously grasp connection states of ports of a network system by using an inquiry frame and an exchange frame. At the time when a line is broken, when actively confirming a state of a port connected to a port in which a line is broken via a downstream device, the network repeaters each grasp that which portion of the line is broken and determine whether a switchover is required. Through the process, the network repeaters each prevent a useless switchover such as switching-back immediately after the switchover, and at the same time since a mechanism of waiting for a given length of times is not required, they each perform a fast switchover. 1. A network system comprising:a first redundant control device; anda second redundant control device, the second redundant control device as at least one other redundant control device being connected to the first redundant control device via downstream devices,wherein:the first redundant control device transmits from first ports connected to the downstream device an inquiry frame including a device identifier of the first redundant control device and port identifiers of the first ports;when the inquiry frame transmitted by the first redundant control device is received from second ports connected to the downstream devices, in addition to a device identifier of the first redundant control device included in the inquiry frame and port identifiers of the first ports, the second redundant control device transmits to the first redundant control device an exchange frame including a device identifier of the second redundant control device and port identifiers of the second ports; andwhen receiving the exchange frame, based on information included in the exchange frame, the first redundant control device keeps connection states of the ports that the first ports of the first redundant control device and the second ports of the second redundant control device are ...

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Номер записи: 65
07-11-2013 дата публикации

Estimation of channel quality indicator using unused codes

Номер: US20130294276A1
Автор: Anders Rosenqvist, Andreas Cedergren
Принадлежит: Telefonaktiebolaget LM Ericsson AB

Methods, a user equipment and a radio network node relating to estimation of a channel quality indicator, CQI, are provided. Downlink channels of a radio communication system are associated to a plurality of codes for code division multiplexing. Each downlink channel is associated to a respective code of said plurality of codes. The radio network node obtains information about an unused code among said plurality of codes. The user equipment obtains information about the unused code. The user equipment receives a downlink transmission from the radio network node. The user equipment estimates the CQI based on the unused code, wherein the unused code is unused with respect to the received downlink transmission.

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Номер записи: 66
14-11-2013 дата публикации

EQUALIZATION OF TRANSMISSIONS

Номер: US20130301696A1
Автор: Lanning Eric J., Smith Dale T.
Принадлежит:

Transmissions from mid-bus test equipment to a first device and from a second device to the mid-bus test equipment are equalized. Equalization instructions are passed from the first device through the mid-bus test equipment to the second device. The mid-bus test equipment changes the quality of transmissions sent to the first device in order to steer the first device to produce equalization instructions that will produce optimized transmissions from the mid-bus test equipment to the first device and from the second device to the mid-bus test equipment. 1. A method for equalizing transmissions from mid-bus test equipment to a first device and from a second device to the mid-bus test equipment , the method comprising:passing equalization instructions from the first device through the mid-bus test equipment to the second device; and,changing quality of transmissions from the mid-bus test equipment to the first device in order to steer the first device to produce equalization instructions that will produce optimized transmissions from the mid-bus test equipment to the first device and from the second device to the mid-bus test equipment.2. A method as in wherein changing quality of transmissions from the mid-bus test equipment to the first device in order to steer the first device includes choosing an initial value for an equalization coefficient within the mid-bus test equipment that is different than an initial value for the equalization coefficient contained in equalization instructions passed from the first device through the mid-bus test equipment to the second device.3. A method as in wherein changing quality of transmissions from the mid-bus test equipment to the first device in order to steer the first device includes choosing an adjustment for an equalization coefficient used within the mid-bus test equipment that is different than an adjustment for the equalization coefficient contained in equalization instructions passed from the first device through the mid- ...

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Номер записи: 67
21-11-2013 дата публикации

RADIO COMMUNICATIONS

Номер: US20130308479A1
Автор: ENESCU Mihai Horatiu, Määttänen Helka-Liina, ROMAN Timo Eric, Schober Karol
Принадлежит: RENESAS MOBILE CORPORATION

An arrangement is described for adapting outer loop precoder phase combiner in a radio communication system having coordinated multipoint transmission. In the arrangement ACK/NACK-message received as a response to a transmitted data packet is used for adapting the phase. When a NACK-message is received the phase may be adapted or it may be further determined if the error was due to error in channel code or due to destructive inter-point signal combining. If the error was due to destructive combining the phase is adjusted. 1. A method for inter-point combiner adaptation in a radio communication network , having coordinated multipoint transmission , the method comprising:transmitting a data packet to a user equipment;receiving an acknowledgment message from the user equipment; andprocessing an inter-point combiner phase over a respective scheduled band if the data packet was received with errors.2. The method according to claim 1 , wherein the radio communication network is using outer loop link adaptation mechanism and claim 1 , as a response to the receipt of an acknowledgment message from the user equipment claim 1 , the method further comprises:issuing an outer loop preeoder link adaptation offset step up if the data packet was received without errors; andissuing an outer loop preeoder link adaptation offset step down and processing the scheduled band inter-point combiner phase if the data packet was received with errors.3. The method according to claim 1 , wherein processing of the inter-point combiner phase applies to either one of per layer claim 1 , per codeword or per transport block or per transmission mode.4. The method according to claim 1 , wherein said processing comprises multiplying the scheduled band inter-point combiner phase by −1.5. The method according to claim 1 , wherein said processing comprises determining a reason for said receiving error and claim 1 , as a response to the determination:multiplying the scheduled band inter-point combiner ...

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Номер записи: 68
12-12-2013 дата публикации

COMMUNICATION PATH CONTROL DEVICE, COMMUNICATION DEVICE, COMMUNICATION PATH CONTROL METHOD, COMMUNICATION METHOD, AND PROGRAM

Номер: US20130329564A1
Автор: Nishioka Jun
Принадлежит: NEC Corporation

The problem of the present invention is, in a network configured from wireless links that can use an adaptive modulation function, when using 1+1 protection, to maintain communication without dropping of data occurring even if there is a drop in the transmission rate as a result of adaptive modulation. The invention of the present application having: an investigation means that, for every communication method that can be used in each of a normal pathway and a backup pathway, investigates an available band that is a band that can be allocated when the transmission rate of the normal pathway and the backup pathway has decreased; and a control means that, on the basis of the investigated available band and a band that a flow is requesting, sets marking in a manner so that the packets of the same flow in the normal pathway and the backup pathway can complement each other. 1. A communication path control device , comprising:an investigation means that investigates an available band, being a band that can be assigned when transmission rates of a normal path and a backup path have declined, for each communication technique that can be used in each of said normal path and said backup path; anda control means that performs a marking setting in such a manner that packets of an identical flow can complement each other in said normal path and said backup path based on said investigated available bands and a band that a flow is requesting.2. The communication path control device according to claim 1 , wherein said control means changes a method of the marking and a method of assigning the band to each modulation technique responding to a result of comparing a value of a minimum available band of said investigated available bands with a value obtained by dividing the band that said flow is requesting by the number of the modulation techniques in which the available band exists.3. The communication path control device according to claim 1 , wherein said control means assigns the ...

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Номер записи: 69
19-12-2013 дата публикации

Receiver and method for estimating a plurality of estimated transfer functions corresponding to wireless channels in a multiple-input system

Номер: US20130336144A1
Автор: Albert Molina, Kameran Azadet, Ramon Sanchez, Samer Hijazi, Sunitha Kopparthi
Принадлежит: Agere Systems LLC

In one embodiment, a receiver is provided for use in a multiple-input system that includes a receiving antenna receiving a time-domain signal corresponding to a plurality of signals transmitted from a plurality of transmitting antennas. The receiver includes: (a) a transform unit adapted to transform the time-domain signal into a frequency-domain signal; (b) a channel estimation unit adapted to estimate, based on the frequency-domain signal and a frequency-domain pilot signal, a combined transfer function corresponding to a plurality of transfer functions of respective channels between the plurality of transmitting antennas and the receiving antenna; and (c) a channel separation unit including a plurality of frequency-domain convolution units that separate the combined transfer function into a plurality of estimated channel transfer functions.

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Номер записи: 70
19-12-2013 дата публикации

Handling complex signal parameters

Номер: US20130336375A1
Автор: Antti Paavo Tapani Kainulainen, Fabio Belloni, Ville Valtteri Ranki
Принадлежит: Nokia Oyj

Apparatus, the apparatus having at least one processor and at least one memory having computer-readable code stored thereon which when executed controls the at least one processor to perform a method comprising: obtaining in-phase and quadrature samples of a received radio signal at least first and second discrete instances in time; processing the samples to provide information relating to the amplitude and/or phase of the received radio signal at the first and second instances in time; using the amplitude and/or phase information of the received radio signal at the first and second instances in time to determine whether interference is present on the received radio signal; forwarding the complex signal parameters for processing if interference is determined not to be present; and discarding the complex signal parameters without forwarding them for processing if interference is determined to be present.

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Номер записи: 71
09-01-2014 дата публикации

Method and system for detecting and mitigating interference in a cable network system

Номер: US20140010269A1
Автор: Curtis Ling, Sridhar Ramesh, Tim Gallagher
Принадлежит: Individual

A cable modem (CM) device captures signals over a wide spectrum including one or more cable frequency bands and sub-bands, and extracts one or more cable channels from the captured signals. The CM device is operable to analyze the extracted one or more cable channels and assigns a portion of the extracted one or more cable channels for upstream and/or downstream communication based on the analysis. The CM device may recapture one or more previously unused cable channels to be utilized for the upstream and/or downstream communication based on the analysis. The CM device may determine noise, interference and/or blocker information corresponding to the extracted one or more cable channels based on the analysis. Based on the determined noise, interference and/or blocker information, the cable modem termination system (CMTS) may assign or block usage of one or more cable channels for the upstream and/or downstream communication.

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Номер записи: 72
16-01-2014 дата публикации

Radio base station apparatus, radio communication method in radio base station apparatus, and radio communication system

Номер: US20140018120A1
Автор: Michiko Anbe
Принадлежит: Fujitsu Ltd

A radio base station apparatus for performing radio communication with a terminal apparatus by using a first and second radio frequency bands, the radio base station apparatus including a change unit which changes a radio frequency band for transmitting a control signal from the first radio frequency band to the second radio frequency band, when the change unit detects interference with respect to the control signal transmitted to the terminal apparatus; and a transmission unit which transmits the control signal by using the second radio frequency band.

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Номер записи: 73
16-01-2014 дата публикации

Error correction device

Номер: US20140019816A1
Автор: Yoshiyuki Hamanaka
Принадлежит: Denso Corp

In an error correction device, a frame generation section receives pulse signals as temperature information of a power switching element transmitted from a PWM comparator. The frame generation section sets a first correction pulse signal, a second correction pulse signal and the temperature information sequentially into each frame. A pulse width of the first correction pulse signal corresponds to a pulse width when a time ratio thereof becomes 100%. A pulse width of the second correction pulse signal corresponds to a pulse width when a time ratio thereof becomes 50%. A microcomputer receives the temperature information through a photocoupler and corrects the received temperature information. The microcomputer calculates a temperature detection value of the power switching element on the basis of the corrected temperature information.

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Номер записи: 74
23-01-2014 дата публикации

FAULT DIAGNOSIS DEVICE FOR MULTIPLEXER

Номер: US20140022913A1
Автор: Mizoguchi Tomomichi
Принадлежит:

The fault diagnosis device is for a multiplexer having inner channels selectable by a selection signal. At least two of the inner channels are assigned with input channels. Two of the inner channels in a mutually exclusive relationship are assigned with first and second diagnostic channels. Input voltages of the first and second diagnostic channels are applied with first and second diagnostic voltages, respectively. The fault diagnostic device includes a voltage detection section configured to detect a first detection voltage appearing at the output channel when the first diagnostic channel is selected and a second detection voltage appearing at the output channel when the second diagnostic channel is selected, and a diagnosis section configured to determine that the multiplexer is faulty upon detecting that the first detection voltage is different from the first diagnostic voltage or the second detection voltage is different from the second diagnostic voltage. 1. A fault diagnosis device for a multiplexer having a plurality of inner channels selectable by a selection signal represented by a plurality of bits , at least two of the inner channels being respectively assigned with input channels , one of the input channels being selected to be connected to an output channel of the multiplexer in accordance with the selection signal , two of the inner channels which are in a mutually exclusive relationship in logic state being respectively assigned with first and second diagnostic channels , an input voltage of the first diagnostic channel being applied with a first diagnostic voltage , an input voltage of the second diagnostic channel being applied with a second diagnostic voltage , the fault diagnostic device comprising:a voltage detection section configured to detect a first detection voltage appearing at the output channel when the first diagnostic channel is selected by the selection signal and a second detection voltage appearing at the output channel when the ...

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Номер записи: 75
23-01-2014 дата публикации

TEST SYSTEM AND A TEST METHOD FOR DETERMINING PROCESSING PARAMETERS OF AUDIO AND/OR VIDEO DATA

Номер: US20140022923A1
Автор: Gruber Ingo, GSÖDL Harald, IBL Harald
Принадлежит:

The test system according to the invention for determining processing parameters of audio and/or video data in a mobile-radio device with a test device () comprising an audio/video unit () which stores the audio/video data and outputs them as audio and/or video data-packets. Moreover, the test device () comprises a mobile-radio unit (), which is connected to the audio/video unit (), whereas the mobile-radio unit () is embodied for the transmission of the audio and/or video data via a mobile-radio interface () to a mobile-radio device () under test; a detection unit (), which is connected to the mobile-radio device () under test and is embodied in order to detect audio and/or video data; and an analysis unit (), which is connected to an analysis interface () between the audio/video unit () and the mobile-radio unit () and to the detection unit (). 1. A test system for determining at least one processing parameter of audio and/or video data in a mobile-radio device with a test device comprisingan audio/visual unit, which outputs the audio and/or video data,a mobile-radio unit, which is connected to the audio/video unit, whereas the mobile-radio unit is embodied for the transmission of the audio and/or video data via a mobile-radio interface to the mobile-radio device under test,a detection unit which is connected to the mobile-radio device under test and embodied for the detection of audio and/or video data, andan analysis unit, which is connected to an analysis interface between the audio/video unit and the mobile-radio unit and to the detection unit and which is embodied to detect the audio and/or video data at the analysis interface and in the detection unit.2. The test system according to claim 1 ,wherein the processing parameter is the processing rate, and wherein the analysis unit is embodied in order to determine the processing rate from the delay time of the audio and/or video data between the analysis interface and the detection unit.3. The test system ...

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Номер записи: 76
23-01-2014 дата публикации

Method, Apparatus, and System for Link Adaptation

Номер: US20140023020A1
Автор: Huang Yongming, Ji Baofeng, Li Yunbo, Yang Lvxi
Принадлежит: Huawei Technologies Co., Ltd.

The present invention discloses a method. The method includes: obtaining link adaptation update information according to a link state; and sending a block acknowledgment frame to a transmission opportunity holder, where the link adaptation update information is carried in the block acknowledgment frame so that the transmission opportunity holder performs link adaptation according to the link adaptation update information. 1. A method for link adaptation , comprising:obtaining link adaptation update information according to a link state; andsending a block acknowledgment frame to a transmission opportunity holder,wherein the link adaptation update information is carried in the block acknowledgment frame such that the transmission opportunity holder performs link adaptation according to the link adaptation update information.2. The method according to claim 1 , further comprising quantizing the link adaptation update information claim 1 , and wherein the link adaptation update information is carried in the block acknowledgment frame comprises carrying the quantized link adaptation update information in the block acknowledgment frame.3. The method according to claim 1 , wherein the link adaptation update information comprises signal-to-noise ratio information of a link claim 1 , or modulation and coding scheme information.4. The method according to claim 1 , wherein the link adaptation update information is carried in the block acknowledgment frame comprises carrying the link adaptation update information in a block acknowledgment control field or a start sequence control field of the block acknowledgment frame.5. The method according to claim 3 , wherein the signal-to-noise ratio information comprises one or a plurality of: total average signal-to-noise ratio claim 3 , total average signal-to-noise ratio correction value claim 3 , average signal-to-noise ratio of each space-time stream claim 3 , average signal-to-noise ratio correction value of each space-time stream ...

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Номер записи: 77
30-01-2014 дата публикации

CARRIER AGGREGATION TESTING METHOD AND APPARATUS FOR PERFORMING THE SAME

Номер: US20140029440A1
Автор: GENOUD Olivier, MATUSZ Pawel
Принадлежит: ANRITSU CORPORATION

A carrier aggregation testing method for a wireless communication system, includes the steps of allocating a primary component carrier between a User Equipment and a carrier aggregation testing apparatus being configured to act as a Base Station with regard to the User Equipment, allocating at least one functionally limited secondary component carrier between the User Equipment and the carrier aggregation testing apparatus, aggregating the at least one functionally limited secondary component carrier with the primary component carrier, executing a carrier aggregation test being based on a functionality of the at least one functionally limited secondary component carrier. 1. A carrier aggregation testing method for a communication system , the method comprising the steps of:allocating a primary component carrier between a User Equipment and a carrier aggregation testing apparatus being configured to act as a Base Station with regard to the User Equipment;allocating at least one functionally limited secondary component carrier between the User Equipment and the carrier aggregation testing apparatus;aggregating the at least one functionally limited secondary component carrier with the primary component carrier;executing a carrier aggregation test being based on a functionality of the at least one functionally limited secondary component carrier.2. A method according to claim 1 , wherein the at least one functionally limited secondary component carrier is a virtual component carrier supporting no physical signals.3. A method according to claim 1 , wherein the at least one functionally limited secondary component carrier supports only downlink signals and procedures.4. A method according to claim 1 , wherein the at least one functionally limited secondary component carrier supports only a subset of uplink and downlink signals and/or procedures.5. A method according to anyone of to claim 1 , wherein for allocating and aggregating the at least one functionally limited ...

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Номер записи: 78
06-02-2014 дата публикации

Data independent error computation and usage with decision directed error computation

Номер: US20140040706A1
Автор: Jason Bellorado, Marcus Marrow, Zheng Wu
Принадлежит: SK Hynix Memory Solutions America Inc

An analog front end is adjusted by determining a signal quality based at least in part on digital sample(s). If the signal quality satisfies one or more criteria, a data independent gain gradient and a data independent offset gradient are selected to adjust the analog front end, where the two gradients are generated without taking into consideration an instantaneous value of an expected signal. If the signal quality does not satisfy the criteria, a decision directed gain gradient and a decision directed offset gradient are selected to adjust the analog front end, where the two gradients are generated based at least in part on decision(s).

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Номер записи: 79
13-02-2014 дата публикации

Channel quality measurements for downlink resource allocation

Номер: US20140043996A1
Автор: Ariela Zeira, Eldad Zeira, James M. Miller, Stephen E. Terry, Stephen G. Dick
Принадлежит: InterDigital Technology Corp

A method for reporting channel quality from a user equipment (UE) to a base station is described. The UE derives a channel quality for each of a plurality of downlink resources. The UE transmits channel quality reports in a pattern of time intervals by rotating through the plurality of downlink resources in different time intervals of the pattern, wherein a channel quality report is not transmitted by the UE in each time interval of a frame.

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Номер записи: 80
13-03-2014 дата публикации

LTE/1X Dual-Standby with Single-Chip Radio

Номер: US20140073371A1
Автор: Isabel G. Mahe, Syed Aon Mujtaba, Vinay Majjigi, Wen Zhao, Xiaowen Wang
Принадлежит: Apple Inc

Electronic devices may be provided that contain wireless communication circuitry. The wireless communication circuitry may include radio-frequency transceiver circuitry coupled to antennas by switching circuitry. Multiple radio access technologies may be supported. A device may include first and second antennas. Control circuitry can configure the transceiver circuitry and switching circuitry to support operation of the device in active and idle modes for each radio access technology. In some configurations, both antennas may be used to support operations associated with one of the radio access technologies. In other configurations, the first antenna may be used to support operations with a first of the radio access technologies while the second antenna is used to support operations with a second of the radio access technologies.

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Номер записи: 81
20-03-2014 дата публикации

TRANSMISSION UNIT AND DIAGNOSIS METHOD

Номер: US20140079108A1
Автор: Niigata Katsuya
Принадлежит: FUJITSU LIMITED

A transmission unit connected to a reception unit via a communication cable. The transmission unit includes: a diagnostic data transmitting section to transmit, to the reception unit via the communication cable, diagnostic data converted into signals under a signal conversion condition for a diagnosis, of which a value of at least one parameter is different from a signal conversion condition for a transmission defined as a data-to-signal conversion condition for transmitting data to the reception unit; and a diagnosing section to diagnose a status of the communication cable on the basis of a diagnostic data error rate measured by the reception unit receiving the diagnostic data. 1. A transmission unit connected to a reception unit via a communication cable , the transmission unit comprising:a diagnostic data transmitting section to transmit, to the reception unit via the communication cable, diagnostic data converted into signals under a signal conversion condition for a diagnosis, of which a value of at least one parameter is different from a signal conversion condition for a transmission defined as a data-to-signal conversion condition for transmitting data to the reception unit; anda diagnosing section to diagnose a status of the communication cable on the basis of a diagnostic data error rate measured by the reception unit receiving the diagnostic data.2. The transmission unit according to claim 1 , wherein the diagnosing section diagnoses claim 1 , if the diagnostic data error rate exceeds a default value claim 1 , that the communication cable comes to a status of its continuous use being undesirable and outputs information indicating that effect.3. The transmission unit according to claim 1 , wherein the diagnosing section receives error rate information indicating whether the received diagnostic data error rate exceeds the default value or not claim 1 , then diagnoses claim 1 , if the received error rate information indicates that the diagnostic data error ...

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Номер записи: 82
20-03-2014 дата публикации

Terminal device and response signal sending method

Номер: US20140082431A1
Автор: Ayako Horiuchi, Daichi Imamura, Masayuki Hoshino, Toru Oizumi
Принадлежит: Panasonic Corp

Provided is a terminal ( 200 ) which notifies a base station ( 100 ) of response signals generated by bundling error detection results for the downlink data of a first band and a second band and in which a calculating unit ( 204 ) receives the downlink data for each band, a CRC unit ( 211 ) detects any errors in the downlink data, and an answer signal generating unit ( 212 ) generates answer signals by bundling error detection results on the basis of the bit number ratio of the error detection results for the first band and the second band, so that the total number of bits in the error detection results for the downlink data obtained using the CRC unit ( 211 ) is the number of notification bits in the response signals.

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Номер записи: 83
27-03-2014 дата публикации

Method, system and apparatus for evaluation of input/output buffer circuitry

Номер: US20140089752A1
Автор: Christopher J. Nelson, David J. Zimmerman, Pete D. Vogt, Tak M. Mak
Принадлежит: Intel Corp

Techniques and mechanisms for evaluating I/O buffer circuits. In an embodiment, test rounds are performed for a device including the I/O buffer circuits, each of the test rounds comprising a respective loop-back test for each of the I/O buffer circuits. Each of the test rounds corresponds to a different respective delay between a transmit clock signal and a receive clock signal. In another embodiment, a first test round indicates a failure condition for at least one I/O buffer circuit and a second test round indicates the failure condition for each of the I/O buffer circuits. Evaluation of the I/O buffer circuits determines whether the device satisfies a test condition, where the determining is based on a difference between the delay corresponding to the first test round and the delay corresponding to the second test round.

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Номер записи: 84
03-04-2014 дата публикации

System timing margin improvement of high speed i/o interconnect links by using fine training of phase interpolator

Номер: US20140093014A1
Автор: Fangxing Wei, Subratakumar Mandal
Принадлежит: Intel Corp

Methods and apparatus for improving system timing margin of high speed I/O (input/output) interconnect links by using fine training of a phase interpolator are described. In some embodiments, I/O links use forward clock architecture to send data from transmit driver to receiver logic. Moreover, at the receiver side, Phase Interpolator (PI) logic may be used to place the sampling clock at the center of the valid data window or eye. In an embodiment, a Digital Eye Width Monitor (DEWM) logic may be used to measure data eye width in real time. Other embodiments are also disclosed.

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Номер записи: 85
10-04-2014 дата публикации

OUTER LOOP CONTROL OF CQI REPORTING AND GENERATION IN WIRELESS NETWORK

Номер: US20140098688A1
Автор: BOPPANA Surendra, Kang Insung, KHANDEKAR Aamod Dinkar, POTNIS Vishwajeet
Принадлежит: QUAL COMM Incorporated

An outer loop for channel quality metric estimation may analyze channel realization and perform adaptive averaging to correct for an inner loop bias. The outer loop may take into account varying channel conditions and may adjust a reported channel quality metric up or down depending on throughput. 1. A method of wireless communication , comprising:determining an observed block error rate (BLER) for received transmissions; andadjusting a channel quality reporting metric based at least in part on the observed BLER to approach a target BLER, the channel quality reporting metric being based at least in part on a spectral efficiency metric.2. The method of claim 1 , further comprising generating the spectral efficiency metric based at least in part on a data channel.3. The method of claim 1 , in which the adjusting comprises adjusting a reported signal-to-interference ratio (SIR) on which the channel quality reporting metric is based claim 1 , the SIR being based at least in part on the spectral efficiency metric.4. The method of claim 3 , in which the SIR is adjusted based at least in part on a cyclic redundancy check of a received packet.5. The method of claim 3 , in which the SIR is adjusted based at least in part on the target BLER.6. The method of claim 1 , in which the adjusting comprises adjusting the spectral efficiency metric on which the channel quality reporting metric is based.7. The method of claim 1 , further comprising:maintaining a plurality of candidate code rates; anddynamically selecting one of the candidate code rates to improve a performance metric.8. The method of claim 7 , further comprising dynamically computing the performance metric based at least in part on the spectral efficiency metric and the observed BLER.9. The method of claim 8 , further comprising generating the channel quality reporting metric based at least in part on a transmitted code rate.10. The method of claim 7 , in which the performance metric is throughput.11. An apparatus for ...

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Номер записи: 86
01-01-2015 дата публикации

Estimating and Utilizing Client Receive Interference Cancellation Capability in Multi-User Transmissions

Номер: US20150003261A1
Автор: Brian D. Hart, Matthew A. Silverman, Paul J. Stager
Принадлежит: Cisco Technology Inc

A first device having a plurality of antennas wirelessly transmits multiple series of test packets to a second device having one or more antennas, each series of test packets being transmitted with a different level of interference imposed on the test packets. The first device determines a packet error rate for each series of test packets transmitted by the first device. The first device derives an estimate of an interference cancellation capability of the second device based on the packet error rate for different levels of interference.

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Номер записи: 87
01-01-2015 дата публикации

Extension carrier discovery for carrier aggregation

Номер: US20150003348A1
Автор: Hiroyuki Ishii, Yoshihisa Kishiyama
Принадлежит: NTT DOCOMO INC

Two alternative embodiments are disclosed to enable a user equipment to efficiently discover small cells using a secondary carrier. The user equipment has a primary carrier link to a base station. In addition, the user equipment has a secondary carrier link to a network node in a small cell within a macro cell supported by the base station. The small cells are discovered through novel beacon signals or through modified PSS/SSS transmissions.

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Номер записи: 88
06-01-2022 дата публикации

TRANSMISSION APPARATUS AND TRANSMISSION METHOD

Номер: US20220006577A1
Автор: Hirano Akira, INUZUKA Fumikazu, Kitamura Kei, Ohara Takuya, Tomizawa Masahito
Принадлежит:

A transmission apparatus includes redundant first communication devices configured to communicate with a communication apparatus provided in a first network, and redundant second communication devices configured to communicate with a communication apparatus provided in a second network. The second communication devices include respective first ends that are ends of redundant communication paths of the first communication devices, and the first communication devices include respective second ends that are ends of redundant communication paths of the second communication devices. 1. A transmission apparatus comprising:redundant first communication devices configured to communicate with a communication apparatus provided in a first network; andredundant second communication devices configured to communicate with a communication apparatus provided in a second network, whereinthe second communication devices include respective first ends that are ends of redundant communication paths of the first communication devices, and,the first communication devices include respective second ends that are ends of redundant communication paths of the second communication devices.2. The transmission apparatus according to claim 1 , whereinthe first ends are configured to transmit received signals received by the second communication devices to the first communication devices, andeach of the second ends is configured to select any one of the received signals transmitted from the second communication devices.3. The transmission apparatus according to claim 2 , further comprising:a redundancy controller, including one or more processors, configured to acquire redundancy information indicating a redundant state of the second communication devices from the second communication devices, and control one of the received signals selected by each of the second ends based on the redundancy information.4. The transmission apparatus according to claim 1 , whereinthe second ends are configured to ...

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Номер записи: 89
02-01-2020 дата публикации

Field device, method of diagnosing field device and diagnostic apparatus

Номер: US20200003591A1
Автор: Junichi IWASHITA, Toru Shimura
Принадлежит: Yokogawa Electric Corp

In order to improve the adaptability of diagnosis of an operating state of a field device, a field device 10 according to the present disclosure has a diagnoser 17 configured to diagnose an operating state of the field device 10 by hierarchically implementing a plurality of diagnostic processes. The diagnoser 17 can select whether to enable or disable a diagnostic result of at least one diagnostic process of a plurality of diagnostic processes in a diagnostic process after the one diagnostic process.

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Номер записи: 90
05-01-2017 дата публикации

Method and System for Partitioning Signal Processing Chains in a Communication Network

Номер: US20170005736A1
Автор: Gage William Anthony
Принадлежит: Huawei Technologies Co., Ltd.

A method and system for dynamically partitioning a signal processing chain of plural signal processing functions, between an edge signal processor associated with an edge node, and a common signal processor associated with a base node is provided. The partition point may be determined in accordance with at least a first parameter that is indicative of a current state of an input signal transmitted to the edge node or common equipment node, current operational or configuration state of the communication network or portion thereof, or other parameter that can impact signal transmission and/or processing. By determining the signal processing chain partition point according to a current input signal or network state, embodiments of the present disclosure are able to more efficiently manage network resources. In addition, joint processing schemes such as CoMP may be more effectively deployed. 1. A method for processing an input signal in a communication network , the method comprising:determining a first parameter indicative of a current state of the input signal or communication network;partitioning a signal processing chain which includes plural signal processing functions, into a first stage of signal processing functions and a second stage of signal processing functions based on the first parameter.2. The method of further comprising transmitting instructions to process the input signal with the first stage of signal processing functions to yield an intermediate stream.3. The method of further comprising transmitting instructions to process the intermediate signal with the second stage of signal processing functions.4. The method of wherein the first parameter is indicative of a signal to interference plus noise ratio (SINR) of the input signal.5. The method of wherein the first parameter is indicative of a traffic load on an intermediate network communicatively connecting a base node and at least one edge node.6. The method of wherein the first parameter is ...

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Номер записи: 91
04-01-2018 дата публикации

Clock data recovery circuit using pseudo random binary sequence pattern and operating method for same

Номер: US20180006849A1
Автор: Jaehyeok Jang
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A clock data recovery circuit includes; a clock recovery circuit that receives a pseudo random binary sequence (PRBS) pattern and generates a recovery clock by counting edges of the PRBS pattern, and a data recovery circuit that generates recovery data from at least one of the PRBS pattern and externally provided serial data.

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Номер записи: 92
07-01-2021 дата публикации

Extended link-training time negotiated on link start-up

Номер: US20210006330A1
Автор: Bruce Mcloughlin
Принадлежит: Intel Corp

Examples described herein relate to link training between network connected devices. In some examples, an amount to extend link training is determined. The amount to extend link training can be determined by: receiving, by a receiver in a first device, signals over a lane from a transmitter in a second device, the signals indicating capability to extend link training time and amount to extend link training time; determining, at the first device, a link training time based on a default link training time and an amount to extend link training time; and performing link training based on the determined link training time. In some examples, the determined amount is highest common denominator of the received identified capability and transmitted indicated capability. In some examples, if the received communication indicates no ability to extend link training time, the link training time is a default link training time. In some examples, the signals indicating capability to extend link training time and amount to extend link training time comprise an IEEE 802.3 compatible Next Page.

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Номер записи: 93
07-01-2021 дата публикации

Margin Test Methods and Circuits

Номер: US20210006341A1
Автор: Chen Fred F., Garlepp Bruno W., Ho Andrew, Stojanovic Vladimir
Принадлежит:

Described are methods and circuits for margin testing digital receivers. These methods and circuits prevent margins from collapsing in response to erroneously received data and can thus be used in receivers that employ historical data to reduce intersymbol interference (ISI). Some embodiments detect receive errors for input data streams of unknown patterns and can thus be used for in-system margin testing. Such systems can be adapted to dynamically alter system parameters during device operation to maintain adequate margins despite fluctuations in the system noise environment due to e.g. temperature and supply-voltage changes. Also described are methods of plotting and interpreting filtered and unfiltered error data generated by the disclosed methods and circuits. Some embodiments filter error data to facilitate pattern-specific margin testing. 1. (canceled)2. A receiver circuit comprising: a sampler input terminal to receive a series of symbols;', 'a sampler reference terminal to receive a reference signal against which to compare the series of symbols; and', 'a sampler timing terminal to receive a timing signal;', 'the sampler to sample the series of symbols with reference to the reference signal in time with the timing signal to produce a series of samples;, 'a sampler having a first comparison-logic input terminal coupled to the sampler to receive the series of samples;', 'a second comparison-logic input terminal; and', 'a comparison-logic output terminal;, 'comparison logic having a first multiplexer input terminal coupled to the sampler to receive the series of samples;', 'a second multiplexer input terminal; and', 'a multiplexer output terminal; and, 'a multiplexer having a shift-register input terminal coupled to the multiplexer output terminal; and', 'at least one shift-register output terminal coupled to the second multiplexer input terminal and the second comparison-logic input terminal., 'a shift register having3. The receiver circuit of claim 2 , ...

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Номер записи: 94
07-01-2021 дата публикации

MOBILE COMMUNICATION SYSTEM USING SUBCODING TECHNIQUES

Номер: US20210006351A1
Автор: Drewes Christian, Mueck Markus Dominik, Sagi Mark
Принадлежит:

The disclosure relates to a mobile communication system including: a first transmission path configured to transmit a message according to a first radio access technology; a second transmission path configured to transmit the message according to a second radio access technology; and an encoder configured to encode the message by a code before transmission of the message over the first transmission path and the second transmission path, wherein the code comprises at least two subcodes, and wherein the encoder is configured to encode the message intended for transmission over the first transmission path with a first subcode of the at least two subcodes and to encode the message intended for transmission over the second transmission path with a second subcode of the at least two subcodes. 125.-. (canceled)26. A mobile communication system , comprising:a first transmission path configured to transmit a message according to a first radio access technology;a second transmission path configured to transmit the message according to a second radio access technology; andan encoder configured to encode the message via a code block before transmission of the message over the first transmission path and the second transmission path,wherein the code block comprises at least a first code block portion and a second code block portion, andwherein the encoder is configured to encode the message intended for transmission over the first transmission path with the first code block portion, and to encode the message intended for transmission over the second transmission path with the second code block portion.27. The mobile communication system of claim 26 , wherein a channel code of the first radio access technology is a Low Density Parity Check (LDPC) code.28. The mobile communication system of claim 26 , wherein at least one of the first radio access technology or the second radio access technology is a millimeter wave radio access technology.29. The mobile communication system of ...

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Номер записи: 95
07-01-2021 дата публикации

MITIGATING SENSOR DATA LOSS

Номер: US20210006368A1
Автор: Fox Jeremy R., Harpur Liam S., Hewitt Trudy L., Rice John
Принадлежит:

Mitigating the risk of sensor data loss can include establishing, with a computing node, a first communication channel with a first proximate device and a second communication channel with a second proximate device. The first proximate device can be operatively coupled to a sensor and can generate data in response to signals received from the sensor. The computing node can receive the data generated by the first proximate device. The data can be received from the second proximate device via the second communication channel in response to detecting a failure to receive a complete uncorrupted transmission of the data from the first proximate device via the first communication channel and determining that the second proximate device is capable of receiving and retransmitting the data to the computing node. 1. A method , comprising:establishing, with a computing node, a first communication channel between the computing node and a first proximate device and establishing a second communication channel between the computing node and a second proximate device, wherein the first proximate device is coupled to a sensor; andreceiving, at the computing node, data generated by the first proximate device based on a signal emitted by the sensor, wherein the first proximate device communicates the data to the second proximate device via a third communication channel and the data is received from the second proximate device via the second communication channel in response to detecting a failure to receive via the first communication channel a complete uncorrupted transmission of the data from the first proximate device and determining that the second proximate device is capable of receiving and retransmitting the data to the computing node.2. The method of claim 1 , wherein the detecting a failure to receive via the first communication channel a complete uncorrupted transmission of the data from the first proximate device includes receiving a ready-to-send notification from the ...

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Номер записи: 96
07-01-2016 дата публикации

Method for identifying transmission point, apparatus, and system

Номер: US20160007365A1
Автор: Yueying Zhao, Zongjie Wang
Принадлежит: Huawei Technologies Co Ltd

Embodiments of the present invention provide a method, an apparatus, and a system for identifying a transmission point. The method includes: measuring, by a mobile terminal, pilot quality of transmission points in a soft cell in which the mobile terminal is located, selecting one target transmission point according to a measurement result and a preset rule to receive downlink data; and processing, by the mobile terminal, uplink data according to feature information corresponding to the target transmission point, and sending processed uplink data, so that the target transmission point parses the uplink data after receiving the uplink data, and determines, according to a parsing result, that a transmission point that is selected by the mobile terminal for receiving downlink data is the target transmission point. This may implement that base stations in a soft cell identify a base station that is selected by a mobile terminal for receiving downlink data.

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Номер записи: 97
03-01-2019 дата публикации

DOWNHOLE ADAPTIVE MULTIBAND COMMUNICATION SYSTEM

Номер: US20190007159A1
Автор: Brown Michael John Ross, Dallet Louis, Deville Benoit, Dufour Yann
Принадлежит:

An adaptive multiband access communication system and method for a network of downhole components located in a wellbore are disclosed. Low noise regions of a communication spectrum are identified and frequency channels within the low noise regions are assigned to the downhole components. Communications on the assigned channels are monitored for quality and adjustments are dynamically made to frequency channel assignments if the quality does not satisfy an acceptance criterion. 1. A method of communicating with communication nodes in a wellbore extending from a surface to a region of interest , comprising:providing a transmission medium for multiband medium access by a plurality of communication nodes for communication of information associated with downhole equipment;determining frequency band assignments within a frequency spectrum for multiband communication by the communication nodes on the transmission medium;transmitting, by the communication nodes, information associated with the downhole equipment to a receiver in accordance with the frequency band assignments;determining, by the receiver, quality of the received information on each frequency band;adjusting a frequency band assignment if the quality does not satisfy an acceptance criterion; andtransmitting, by the communication nodes, information associated with the downhole equipment in accordance with the adjusted frequency band assignment.2. The method as recited in claim 1 , wherein determining frequency band assignments comprises:determining a baseline noise level across the frequency spectrum; andidentifying low noise frequency bands within the frequency spectrum, wherein the low noise frequency bands have noise levels that satisfy an acceptance criterion.3. The method as recited in claim 1 , wherein the frequency band assignments are determined by a surface system at the surface of the wellbore claim 1 , and the method comprises communicating claim 1 , by the surface system the frequency band ...

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Номер записи: 98
03-01-2019 дата публикации

IMPULSE NOISE MANAGEMENT

Номер: US20190007164A1
Автор: Tzannes Marcos C.
Принадлежит:

A discrete multitone transceiver (DMT) includes a deinterleaver operable to de-interleave a plurality of bits. The DMT further includes: a forward error correction decoder operable to decode the plurality of bits, a module operable to determine, during Showtime, an impulse noise protection value, wherein the impulse protection value specifies a number corrupted DMT symbols that can be corrected by the forward error correction decoder in combination with the deinterleaver, and a receiver coupled to the deinterleaver. The receiver receives using a first interleaver parameter value, receives a flag signal, and changes to receiving using a second interleaver parameter value that is different than the first interleaver parameter value, wherein the second interleaver parameter value is used for reception on a pre-defined forward error correction codeword boundary following reception of the flag signal. 1. In a transceiver , a method of adapting the impulse noise protection capability during steady-state communication comprising:receiving using a first FIP setting; andswitching to receiving using a second FIP setting.272-. (canceled) This application is a Continuation of U.S. application Ser. No. 14/075,077, filed Nov. 8, 2013, now U.S. Pat. No. 8,743,932, which is a Continuation of U.S. application Ser. No. 13/914,852, filed Jun. 11, 2013, now U.S. Pat. No. 8,594,162, which is a Continuation of U.S. application Ser. No. 12/769,193 filed Apr. 28, 2010, now U.S. Pat. No. 8,462,835, which is a Continuation of U.S. application Ser. No. 10/597,482, filed Jul. 27, 2006, which is a national stage application under 35 U.S.C. 371 of PCT Application No. PCT/US2005/006842, filed Mar. 3, 2005, which claims the benefit of and priority under 35 U.S.C. § 119(e) to U.S. Provisional Application No. 60/549,804, entitled “On-Line Impulse Noise Protection (INP) Adaptation,” filed Mar. 3, 2004, and U.S. Provisional Application No. 60/555,982, entitled “Impulse Noise Protection (INP) Training ...

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Номер записи: 99
02-01-2020 дата публикации

DMT SYMBOL REPETITION IN THE PRESENCE OF IMPULSE NOISE

Номер: US20200007268A1
Автор: Tzannes Marcos C.
Принадлежит:

With the current initialization procedures defined in the VDSL and ADSL standards, even though the xDSL system could operate in Showtime in an impulse noise environment where symbols are being corrupted, the transceivers would not be able to reach Showtime because initialization would fail due to initialization message failure. Through the use of an improved initialization procedure for communication systems, operation in environments with higher levels of impulse noise is possible. 1. A communication system initialization method comprising determining a number of DMT symbols to be repeated during initialization based on an impulse noise protection value.243-. (canceled) This application claims the benefit of and priority under 35 U.S.C. § 119(e) to U.S. Patent Application No. 60/619,618, filed Oct. 15, 2004, entitled “xDSL Initialization in the Presence of Impulse Noise,” which is incorporated herein by reference in its entirety.This invention generally relates to communication systems. More specifically, an exemplary embodiment of this invention relates to an initialization technique for communication systems. Another exemplary embodiment relates to error detection and correction during initialization.Communication systems often operate in environments with impulse noise. Impulse noise is a short-term burst of noise that is higher than the normal noise that typically exists in the communication channel. For example, DSL systems operate on telephone lines and experience impulse noise from many external sources including telephones, AM radio, HAM radio, other DSL services on the same line or in the same bundle, other equipment in the home, etc. It is common practice for communication systems to use interleaving in combination with Forward Error Correction (FEC) to correct the errors caused by the impulse noise during user data transmission, i.e., SHOWTIME.Standard initialization procedures in xDSL systems, such as those specified in ADSL ITU G.992 standards and VDSL ...

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Номер записи: 100