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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 23341. Отображено 100.
06-05-2019 дата публикации

Устройство оценки допплеровского смещения частоты гармонического сигнала

Номер: RU0000188982U1
Автор: Александр Евгеньевич Тимофеев, Андрей Николаевич Мингалев, Владимир Викторович Егоров, Михаил Леонидович Маслаков, Михаил Сергеевич Смаль, Сергей Александрович Лобов
Принадлежит: Акционерное общество "Российский институт мощного радиостроения", Патентное бюро

Полезная модель относится к области электрорадиотехники, а именно к технике радиосвязи, и может быть использована в системах одночастотной передачи данных, а также в системах радиозондирования для измерения допплеровского смещения несущей частоты сигнала в информационно-измерительных. Устройство содержит аналого-цифровой преобразователь, блок накопления, первый счетчик, второй счетчик, умножитель, сумматор-накопитель, делитель, блок памяти, блок нормировки и решающее устройство.Техническим результатом является определение допплеровского смещения частоты по гармоническому синусоидальному сигналу. 1 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 188 982 U1 (51) МПК G01R 23/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК H04L 27/26 (2019.02); G01R 23/00 (2019.02); H04L 27/2672 (2019.02); H04B 7/165 (2019.02) (21) (22) Заявка: 2019103158, 05.02.2019 (24) Дата начала отсчета срока действия патента: 05.02.2019 06.05.2019 (45) Опубликовано: 06.05.2019 Бюл. № 13 1 8 8 9 8 2 R U (56) Список документов, цитированных в отчете о поиске: RU 186027 U1, 26.12.2018. RU 183781 U1, 02.10.2018. RU 2643708 C2, 05.02.2018. Статья: "МЕТОД ИЗМЕРЕНИЯ ДОППЛЕРОВСКОГО СМЕЩЕНИЯ ЧАСТОТЫ ПО СУММЕ ГАРМОНИЧЕСКИХ СИГНАЛОВ", 5-я Международная молодежная научнотехническая конференция "Современные проблемы радиотехники и телекоммуникаций РТ-2009", 20 - 25 апреля 2009 г., Севастополь, Украина. RU (см. прод.) (54) УСТРОЙСТВО ОЦЕНКИ ДОППЛЕРОВСКОГО СМЕЩЕНИЯ ЧАСТОТЫ ГАРМОНИЧЕСКОГО СИГНАЛА (57) Реферат: Полезная модель относится к области цифровой преобразователь, блок накопления, электрорадиотехники, а именно к технике первый счетчик, второй счетчик, умножитель, радиосвязи, и может быть использована в сумматор-накопитель, делитель, блок памяти, системах одночастотной передачи данных, а блок нормировки и решающее устройство. также в системах радиозондирования для Техническим результатом является измерения допплеровского смещения несущей ...

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Номер записи: 1
12-01-2012 дата публикации

Relay station, base station, relay method and communication method used in wireless communications network

Номер: US20120008547A1
Автор: Hitoshi Yokoyama, Takayoshi Ode
Принадлежит: Fujitsu Ltd

A relay station includes a wireless communication interface configured to receive radio signals transmitted from plural mobile stations; and a processor configured to descramble the radio signals and extract identification information of physical layers of the mobile stations, and to convert the identification information of the physical layers to identification information of MAC layers, which are data link layers, and form a protocol data unit which includes the identification information of the MAC layers in a header and includes service data units of the radio signals.

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Номер записи: 2
12-01-2012 дата публикации

Systems and methods for inter-system sharing of satellite communications frequencies within a common footprint

Номер: US20120009920A1
Автор: Peter D. Karabinis
Принадлежит: ATC Technologies LLC

Two satellite communications systems can use the same frequency or frequencies in geographically overlapping footprints, without creating undue interference in a given system that is caused by the same frequency signal(s) that is/are used by the other system. In particular, an aggregate Effective Isotropic Radiated Power (EIRP) of the radioterminals and/or ancillary terrestrial components of a second satellite communications system in the common footprint is sufficiently low, and/or the receive antenna gain of a first satellite communications system is sufficiently low compared to the receive antenna gain of the second satellite communications system, so as to increase an aggregate receiver noise that is seen by the first satellite system receivers by an amount that does not substantially change a Quality of Service (QoS) of the first satellite communications system.

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Номер записи: 3
19-01-2012 дата публикации

Radio communication system, relay device, control device, and communication method

Номер: US20120015601A1
Автор: Masafumi Tsutsui
Принадлежит: Fujitsu Ltd

A radio communication system including a first communication device configured to transmit a signal, a relay device which includes a receiver configured to receive the transmitted signal, an amplifier configured to amplify the received signal according to a gain determined by a processor included in a control device, and a transmitter configured to transmit the amplified signal to a second communication device, the second communication device being configured to receive the amplified signal, and the transmitted signal, which is transmitted directly from the first communication device, and the control device being configured to improve a reception quality of the amplified signal and the directly transmitted signal.

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Номер записи: 4
19-01-2012 дата публикации

Method in a wireless repeater employing an antenna array for interference reduction

Номер: US20120015608A1
Автор: Hakan Inanoglu, James Arthur Proctor, Jr., Kenneth M. Gainey, Steven J. Howard
Принадлежит: Qualcomm Inc

A wireless repeater with an antenna array determines the antenna weights to modify the spatial selectivity of the antenna array to reduce interference and improve the quality of signal reception. The antenna weights are determined using an error minimizing algorithm to minimize the error between a desired receive signal and a reference signal or an adaptive metric optimization algorithm to calculate adaptively antenna weights to minimize the signal-to-noise ratio of a desired receive signal.

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Номер записи: 5
09-02-2012 дата публикации

Wireless communications apparatus and methods employing opportunistic frequency band use

Номер: US20120034944A1
Автор: George Ronald Olexa, Rajendra Singh
Принадлежит: TELCOM VENTURES LLC

A base station selectively communicates with terminals using first and second separately allocated frequency bands, e.g., separate cellular/PCS bands, of a government spectrum allocation based on propagation conditions between the base station and the terminals. The base station may transmit in the first frequency band and receive in the second frequency band during a first time slot and transmit in the second frequency band and receive in the first frequency band during a second time slot. The base station may transmit to a terminal in the first frequency band while receiving from the terminal in the second frequency band during the first time slot and may transmit to the first terminal in the second frequency band while receiving from the first terminal in the first frequency band during the second time slot.

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Номер записи: 6
16-02-2012 дата публикации

Method for transceiving data with both a mobile station and a relay station in a broadband wireless communication system

Номер: US20120039241A1
Автор: Hanbyul Seo
Принадлежит: LG ELECTRONICS INC

A method for transceiving data with both a mobile station and a relay station in a mobile communication system are disclosed. In a present invention, the base station transmits an ACK signal regardless of whether a result of the decoding is successful or unsuccessful to the terminal for using a uplink packet data transmitted from the relay station. And, the relay station operates two operation modes. Procedures of downlink/uplink packet data transmission according to the operation mode are disclosed.

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Номер записи: 7
16-02-2012 дата публикации

Communication technique for a repeater using a transmission indicator

Номер: US20120039243A1
Автор: Seung June Yi, Sung Duck Chun, Sung Jun Park
Принадлежит: LG ELECTRONICS INC

To prevent the self-interference of an inband relay node, a base station transmits a transmission indication on the downlink of a Un interface. Only when the base station receives an ACKnowledgment (ACK) signal in response to the transmission indication from the relay node, the base station transmits a Un interface downlink signal to the relay node in a specific time area. The time area allocated by the transmission indication may be a time area added to a statically allocated time area.

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Номер записи: 8
16-02-2012 дата публикации

Method, relay node, and system for processing data on relay link

Номер: US20120039245A1
Автор: Ke Wang, Yan Peng
Принадлежит: Huawei Technologies Co Ltd

A method, a device, and a system for processing data in a relay link are provided. A method for processing data in a relay link includes: processing, by a relay node by using a first protocol stack, data received by the relay node, where the first protocol stack includes a first MAC layer that is configured to define a media access protocol and an RLC layer that is configured to define a radio link layer, and the first MAC layer is configured to perform tunnel processing on the data. Processing data by using the protocol stacks provided in embodiments of the present invention implements flexible scheduling in the relay link and reduces scheduling overhead in the relay link.

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Номер записи: 9
23-02-2012 дата публикации

Signal restoring apparatus and method thereof

Номер: US20120045987A1
Автор: Dongkuk Ko, Ho Sub Lee, Kyoung-Cheol Lee, Seung Jun Lee, Yeon Hye Yi, Youn-Sang Yoo
Принадлежит: LIG Nex1 Co Ltd

Provided are a signal restoring apparatus that can restore a reception signal of a counterpart terminal and increase frequency band efficiency by estimating its own transmission signal from a reception signal transmitted from a counterpart terminal through a satellite communication device and removing the estimated transmission signal, and a method thereof. The signal restoring apparatus according to the exemplary embodiment of the present invention includes: a transmitter transmitting a transmission signal to a satellite communication device; a band spread signal generator transmitting a band spread signal to the satellite communication device; a signal estimator estimating the transmission signal included in a reception signal transmitted from a counterpart terminal through the satellite communication device on the basis of the transmission signal and the band spread signal; and a signal remover removing the estimated transmission signal from the reception signal.

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Номер записи: 10
15-03-2012 дата публикации

Receiver with Orthogonal Beam Forming Technique

Номер: US20120063550A1
Автор: Donald C. D. Chang, Frank Lu, Yulan Sun
Принадлежит: Chang Donald C D, Frank Lu, Yulan Sun

A receiver with orthogonal beam forming technique is achieved that is capable of differentiating different signal components within the received composite signal. An adaptive processor is used to eliminate the signal component whose phase information is known or can be calculated. The phase information of the major component of a signal can be easily acquired by using a limiter. The phase information of other signal components can be acquired by their direction information and other characteristics, such as modulation scheme, etc. Multiple orthogonal beams can be formed by eliminating one unwanted signal component each time by the adaptive processor until all unwanted signal is eliminated. Thus, a composite signal from multiple sources can be broken down into their component signals.

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Номер записи: 11
15-03-2012 дата публикации

Radio frequency switch for use in satellite receivers

Номер: US20120064823A1
Автор: Keming J. Chen
Принадлежит: General Instrument Corp

Embodiments of the invention generally provide a radio frequency switch, for example for use in a satellite receiver. The switch includes a plurality of input ports and a plurality of output ports, where output ports independently select signal paths from any of the input ports. The entire switch is embodied in a compact single-board layout. In another embodiment, a satellite receiver includes at least one antenna for receiving a signal from a satellite transponder and a radio frequency switch for selecting the satellite transponder from among a plurality of satellite transponders.

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Номер записи: 12
15-03-2012 дата публикации

Mobile communications systems and methods relating to polarization-agile antennas

Номер: US20120064825A1
Автор: Cynthia Furse, David Glen Landon
Принадлежит: L3 Communications Corp, University of Utah Research Foundation UURF

A wireless communication system can include polarization agile antennas to enable adaptation to the polarization characteristics of a changing propagation channel. In one embodiment, a mobile terminal can include one or more polarization-agile antennas, and can select polarization orientations that are preferentially propagated through the changing propagation channel. In another embodiment, a mobile terminal having two polarization-agile antennas can provide spatial diversity, polarization diversity, or combinations of both. Multiple-input multiple-output (MIMO) systems can include polarization-agile antennas to allow for switching between spatial and polarization diversity, combined spatial and polarization diversity, and various Eigen channel decompositions using spatial, polarization, and combined spatial and polarization dimensions. An extended polar normalization provides enhanced fidelity for methods of communications system modeling.

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Номер записи: 13
22-03-2012 дата публикации

Relaying system and method with partner relays and selective transmission

Номер: US20120069779A1
Автор: David Falconer, Koon Hoo Teo, Mo-Han Fong, Shalini Periyalwar
Принадлежит: ROCKSTAR BIDCO LP

Partner relay systems and methods are provided in which relaying is performed by a pair of partner relays. Signals received from a base station are translated by a first of the pair of partner relays to a different transmission resource for communication between the pair of partner relays, and then upon reception by a second of the pair of partner relays, the signal is translated back to the original transmission resource and re-transmitted towards the receiver.

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Номер записи: 14
22-03-2012 дата публикации

Codebook generating method and apparatus for generating a codebook for multi-polarized multiple-input multiple-output (mimo) systems

Номер: US20120069919A1
Автор: BRUNO Clerckx, Goo Chul Chung, Yongxing Zhou
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A method of generating a codebook for a multiple-input multiple-output (MIMO) system is provided. The codebook generation method includes: assigning a single-polarized precoding matrix to diagonal blocks among a plurality of blocks arranged in a block diagonal format in which a number of diagonal blocks corresponds to a number of polarization directions of transmitting antennas; and assigning a zero matrix to remaining blocks excluding the diagonal blocks.

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Номер записи: 15
29-03-2012 дата публикации

Base station, communication system, mobile terminal, and relay device

Номер: US20120076070A1
Автор: Hiroaki Takano
Принадлежит: Sony Corp

A base station including an allocation unit for allocating the downlink of the relay link or the access link and the downlink of the direct link to a resource block included in a same resource block group, and allocating the uplink of the relay link or the access link and the uplink of the direct link to a resource block included in a same resource block group.

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Номер записи: 16
05-04-2012 дата публикации

Active antenna system and method for operation of an active antenna array

Номер: US20120083232A1
Автор: Jonathan Moore, Martin Weckerle, Peter Kenington
Принадлежит: Individual

The application relates to a method for operation of an active antenna array and to an active antenna system. The active antenna system has a signal processing unit and an active antenna array adapted to be operated with a main antenna pattern correlated to a main receive beam and with at least one test antenna pattern correlated to a test receive beam having an orientation different from the main receive beam. A main radio frequency signal is received based on the main antenna pattern and a test radio frequency signal is received based on the test antenna pattern. The main radio frequency signal comprises communications traffic. Performance of the main receive beam is assessed based on the main radio frequency signal and performance of the test receive beam is assessed based on the test radio frequency signal. The main antenna pattern is adjusted based on a comparison of the performance of the main receive beam and test receive beam.

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Номер записи: 17
05-04-2012 дата публикации

Radio communication system

Номер: US20120083275A1
Автор: Katsumasa Sugiyama, Kazuhisa Obuchi, Masatsugu Shimizu, Yoshiaki Ohta, Yoshiharu Tajima, Yoshihiro Kawasaki, Yoshinori Tanaka
Принадлежит: Fujitsu Ltd

A method used in a radio communication system including a first radio base station, a second radio base station that communicates with the first radio base station, a relay station which communicates with the second radio base station via the first radio base station, and a mobile station, the method transmits a request, by the second radio base station, for requesting the first radio base station to communicate with the relay station for the second radio base station and communicating, by the requested first radio base station, with the relay station for the second radio base station and transmits a communication result to the second radio base station.

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Номер записи: 18
12-04-2012 дата публикации

Method for generating codebook, method and apparatus for data transmission

Номер: US20120087422A1
Автор: Weijun SUN, Yongxing Zhou
Принадлежит: Huawei Technologies Co Ltd

A method for generating a codebook and a method and an apparatus for data transmission are provided. The method includes: receiving a label of a codeword sent by a User Equipment (UE); selecting the codeword identified by the label from the codebook for eight-antenna; and coding data to be sent by using the codeword. The codebook for eight-antenna includes at least one rank-8 codeword for eight-antenna. The rank-8 codeword for eight-antenna is generated by multiplying an inverse matrix of a rotation matrix for eight-antenna with an eight-dimensional matrix formed by rank-4 codewords for four-antenna; or generated by extending rank-4 codewords for eight-antenna, where the rank-4 codeword for eight-antenna is generated according to codewords for four-antenna. Therefore, the codeword in the codebook for eight-antenna is applicable to scenarios including dual-polarization strong correlation, dual-polarization weak correlation, single-polarization strong correlation, and single-polarization weak correlation, etc.

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Номер записи: 19
19-04-2012 дата публикации

Network Element for Changing the Timeslot Type According to the received Information

Номер: US20120093071A1
Автор: Lei Du, Min Huang, Yong Teng
Принадлежит: NOKIA SIEMENS NETWORKS OY

It is described a mobile network, in particular an LTE network, including a relay node and a base station. The relay node is adapted for receiving signals from the base station during timeslots of a first type and for transmitting signals to a connected user equipment during timeslots of a second type differing from the first type of timeslots. The base station is adapted for transmitting signals to the relay node during timeslots of the first type and for sending information to the relay node indicating a change of the timeslot type. The relay node is further adapted for changing the timeslot type according to the received information.

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Номер записи: 20
26-04-2012 дата публикации

Apparatus and method for scheduling in wireless communication system

Номер: US20120099454A1
Автор: Dae-Kwon Jung, Eun-ho Choi, Jin-Yup Hwang, Jinyoung Oh, Joo-Eung Kim, Tai-Suk Kim, Youngnam Han
Принадлежит: Korea Advanced Institute of Science and Technology KAIST, SAMSUNG ELECTRONICS CO LTD

A scheduling method and apparatus in a wireless communication system. The scheduling method for a node B in a wireless communication system supporting a plurality of carriers includes determining a delay weight for each of a plurality of user equipment (UEs) according to a preset weight application time point. The method also includes determining a scheduling metric value of each UE per carrier using the delay weight, and determining a priority of each UE per carrier using the scheduling metric value.

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Номер записи: 21
26-04-2012 дата публикации

Method of determining reliability of received signal, method of calculating code phase error, and apparatus for determining reliability of received signal

Номер: US20120100799A1
Автор: Fumikazu Sano, Hiroki Yoshioka, Kazuhiko Tsuchimoto
Принадлежит: Seiko Epson Corp

A method of determining reliability of a received signal is provided, which includes correlating a received signal from a satellite to a replica code, determining reliability of the received signal according to a predetermined reference using a first value and a second value, the first value being a correlation value of a peak phase obtained from the correlating and the second value being a correlation value of a phase delayed for a predetermined phase from the peak phase and changing the reference according to the satellite.

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Номер записи: 22
03-05-2012 дата публикации

Managing Multicast Membership in Wireless LANs

Номер: US20120106547A1
Автор: Ramsundar Janakiraman
Принадлежит: Aruba Networks Inc

Processing of MLD control packets in an access point (AP) connected to a digital network. According to the present invention, an AP in a network converts MLD queries from multicast to unicast and sends these unicast packets to each client of the AP. These MLD query packets may be filtered or restricted by per-user client rules These MLD query packets may also be tagged as high priority packets to speed their delivery. The AP also suppresses the retransmission of MLD Join packets to clients of the AP.

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Номер записи: 23
10-05-2012 дата публикации

Base station, communication system, mobile terminal, and relay device

Номер: US20120113888A1
Автор: Hiroaki Takano
Принадлежит: Sony Corp

A base station is provided with a communication unit for communicating with a mobile terminal via a relay link between the base station and a relay device and an access link between the relay device and the mobile terminal, and a selection unit for selecting an allocation pattern of an uplink of the relay link, a downlink of the relay link, an uplink of the access link, and a downlink of the access link to frequency-time blocks from a plurality of allocation patterns that are different in delay occurring between the base station and the mobile terminal.

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Номер записи: 24
10-05-2012 дата публикации

Method for Processing Data

Номер: US20120114016A1
Автор: Joachim Wehinger
Принадлежит: INFINEON TECHNOLOGIES AG

A method includes encoding data according to a space time transmit diversity scheme and spatial-multiplexing the encoded data.

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Номер записи: 25
17-05-2012 дата публикации

Mobile station apparatus and communication method

Номер: US20120120900A1
Автор: Akihiko Nishio, Kenichi Kuri, Kenichi Miyoshi, Masaru Fukuoka
Принадлежит: Panasonic Corp

Provided is a base station capable of suppressing increase of overhead of allocation result report in frequency scheduling in multi-carrier communication and obtaining a sufficient frequency diversity effect. In the base station, encoding units ( 101 - 1 to 101 - n ) encode data (# 1 to #n) to mobile stations (# 1 to #n), modulation units ( 102 - 1 to 102 - n )modulate the encoded data so as to generate a data symbol, a scheduler ( 103 ) performs frequency scheduling according to a CQI from each mobile station so as to uniformly allocate data to the respective mobile stations for a part of RB extracted from a plurality of RB, and an SCCH generation unit ( 105 ) generates control information (SCCH information) to report the allocation result in the scheduler ( 103 ) to the respective mobile stations.

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Номер записи: 26
31-05-2012 дата публикации

Digital broadcast reception device and digital broadcast reception method

Номер: US20120133840A1
Автор: Daiki Matsuura, Keiichi Shirasuka, Soichiro Matsumoto
Принадлежит: Mitsubishi Electric Corp

Disclosed is a digital broadcast reception device that includes a plurality of tuner/demodulator units; a tuning control unit; a current position detection unit for detecting a current position; a channel scan control unit that has one of the plurality of tuner/demodulator units perform tuning for program viewing or listening, and has another one of the plurality of tuner/demodulator units perform a channel scan by tuning to the physical channels sequentially and detecting receivable physical channels; a broadcast area map generation unit for generating broadcast area maps including the receivable physical channels when the channel scan is executed, broadcast service information regarding broadcast content of the physical channels, and receivable position information; and a broadcast area map storage unit for storing the generated broadcast area maps.

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Номер записи: 27
07-06-2012 дата публикации

Radio communication apparatus and radio communication method

Номер: US20120142275A1
Автор: Akihiko Nishio
Принадлежит: Panasonic Corp

A radio communication device capable of lightening the influence of a frequency selective fading in the wide-band transmission of a single carrier thereby to prevent deterioration of error rate characteristics. In this device, an FFT unit subjects a modulated signal inputted from a modulation unit to a Fourier transformation. A pilot insertion unit inserts a pilot symbol into a plurality of individual frequency components of the modulated signal. Weight multiplication units multiply the individual frequency components and the pilot symbols inserted into the individual frequency components, by weight coefficients set at a weight coefficient setting unit. IFFT units subject the frequency components to an inverse Fourier transformation, thereby to convert the frequency components into time domains.

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Номер записи: 28
07-06-2012 дата публикации

Cooperative communication methods and a device for a target terminal and a cooperative terminal

Номер: US20120142345A1
Автор: Chang Bae Yoon, Dong Ho Cho, Dong Jo Park, Hyun Ho CHOI, Jung Min Moon, Sang Uk Park, Won Jae SHIN, Won Jong Noh
Принадлежит: Korea Advanced Institute of Science and Technology KAIST, SAMSUNG ELECTRONICS CO LTD

Provided is a cooperative communication technology of a target terminal and a cooperative terminal. In an environment in which interference exists between cells, cooperation between terminals may be performed in order to improve quality of signals that are received from a base station.

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Номер записи: 29
21-06-2012 дата публикации

Method and apparatus for setting a frame in a wireless communication system comprising a relay station

Номер: US20120155374A1
Автор: Bin Chul Ihm, Jin Young Chun
Принадлежит: LG ELECTRONICS INC

Provided are a method and apparatus for setting a frame of a relay station in a wireless communication system. A base station sets an access zone frame and a relay zone frame adjacent the access zone frame. The access zone frame comprises a downlink (DL) access zone in which the base station or the relay station transmits a signal to a terminal, and an uplink (UL) access zone in which the terminal transmits a signal to the base station or to the relay station. The relay zone frame comprises a DL relay zone in which the base station transmits a signal to the terminal or to the relay station, and a UL relay zone in which the terminal or the relay station transmits a signal to the base station.

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Номер записи: 30
28-06-2012 дата публикации

Method of using component carrier by relay station in multi-carrier system and relay station

Номер: US20120163288A1
Автор: Byoung Hoon Kim, Hak Seong Kim
Принадлежит: LG ELECTRONICS INC

A method of using component carrier by a relay station in a multi-carrier system comprises: receiving a component carrier (CC) link configuration information from a base station (BS); allocating a CC to at least one of a backhaul link between the BS and the RS and an access link between the RS and an RS user equipment (UE) according to the CC link configuration information; and transmitting or receiving a signal by using the CC in the allocated link.

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Номер записи: 31
09-08-2012 дата публикации

Access control system, access control method, relay station apparatus, terminal station apparatus, transmitting side processing method, receiving side processing system, and receiving side processing method

Номер: US20120201193A1
Автор: Daisuke Umehara, Masaaki Tanaka, Takatoshi Sugiyama
Принадлежит: Nippon Telegraph and Telephone Corp

Provided is a wireless relay system that improves system throughput between terminal stations and flexibly makes system throughput variable with respect to short-term traffic fluctuations. In the wireless relay system, a plurality of relay stations relay communication between two terminal stations that perform random access. The terminal stations and the relay stations include a slot synchronization unit, a time synchronization unit, and a transmission unit. The slot synchronization unit synchronizes slot timing of a time slot indicating a unit time. The time synchronization unit performs time synchronization for synchronization of the slot timing. The transmission unit transmits a transmission packet to a wireless line in synchronization with the slot timing. A transmission right is allocated for at least one time slot to each of a plurality of groups which are configured so that a group of a terminal station or a relay station and a group of an adjacent terminal station or an adjacent relay station are different from each other. The transmission unit transmits the transmission packet to the wireless line only in a time slot in which the transmission right is allocated to the group to which the terminal station or the relay station belongs.

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Номер записи: 32
23-08-2012 дата публикации

Aircraft Communication System

Номер: US20120214420A1
Автор: Bruno Cervia, Daniel O'Connor, Paul Gibson, Robert Milns
Принадлежит: PILATUS FLUGZEUGWERKE AG

An aircraft communication system and corresponding method for establishing a datalink network between participating aircrafts, wherein each participating aircraft comprises a datalink transponder for sending and receiving standard communication messages (M) over a standard communication protocol; said datalink transponders are employed for establishing said datalink network using a standard communication protocol, and wherein said datalink transponders transmitting event driven messages (M) with a predefined structure identifying said messages (M) as test messages (TM) and at the same time comprising message data (MD) for establishing said datalink network, thus providing a datalink network established by transmission of solely messages (M) compliant with said standard communication protocol.

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Номер записи: 33
23-08-2012 дата публикации

Repetitive transmissions in multi-carrier based wireless access techniques

Номер: US20120216092A1
Автор: Jae-Won Chang, Jin-Hyuk Jung, Jin-Young Chun, Moon-Il Lee
Принадлежит: LG ELECTRONICS INC

According to one embodiment, a method for repetitive transmission using a plurality of sub-carriers includes: preparing a symbol to be transmitted using the plurality of sub-carriers within a single time domain unit; repeating the symbol a predetermined number (N) of times; applying a corresponding one of N different cyclic shift values to each of the N repeated symbols to be transmitted using the plurality of sub-carriers within the single time domain unit; performing an IFFT (Inverse Fast Fourier Transform) on each of the N repeated symbols to which the corresponding one of the N different cyclic shift values is applied; and transmitting the N repeated symbols on which the IFFT is performed using the plurality of sub-carriers.

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Номер записи: 34
20-09-2012 дата публикации

Quality of service control in a relay

Номер: US20120236782A1
Автор: Paul Bucknell, Zhaojun Li
Принадлежит: Fujitsu Ltd

A method in a communications system in which a plurality of user equipments are transmitting data to a donor node via a relay node, the plurality of user equipments each storing the data in its own UE buffer prior to transmission to the relay node, the relay node storing the data received from the plurality of user equipments in a relay buffer prior to transmission to the donor node. The method comprises at the relay node, sending a relay buffer status report from the relay node to the donor node when a buffered data value passes a threshold value. The buffered data value representing either data stored in the UE buffers or data stored in the relay buffer.

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Номер записи: 35
20-09-2012 дата публикации

Apparatus and method for frequency shifting of a wireless signal and systems using frequency shifting

Номер: US20120236906A1
Автор: Ami Hazani, Yehuda Binder
Принадлежит: Ami Hazani, Yehuda Binder

Coverage for a wireless network is improved using a frequency shifting scheme. A wireless signal in a frequency band is shifted to another band, and carried in the shifted band to another location where the signal is shifted back to the original frequency band. The frequency shifting may utilize frequency shifting schemes such as mixer/filter and heterodyne. The wireless signal can be frequency shifted by converting it to other representing signals (such as I/Q components) and forming the frequency-shifted signal from the representations. The transmission medium may use dedicated wiring or existing service wiring in a residence or building, including LAN, telephone, AC power and CATV wiring. The system may be enclosed as a stand-alone unit, housed in integrated form as part of a service outlet or as a snap-on/plug-in module.

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Номер записи: 36
04-10-2012 дата публикации

Apparatus and method for communication

Номер: US20120250604A1
Автор: Antti Anton Toskala, Jari Olavi Lindholm, Timo Erkki Lunttila
Принадлежит: NOKIA SIEMENS NETWORKS OY

An apparatus and a method for communication are provided. The apparatus is configured to: communicate with a network via a cell created by a relay node; receive from the relay node information required in reception of backhaul transmission sent by a base station of the network to the relay node, the transmission including at least one data packet designated to the apparatus and in decoding of the at least one data packet; receive a backhaul transmission sent by a base station of the network to the relay node and decode the at least one data packet from the transmission.

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Номер записи: 37
04-10-2012 дата публикации

Device, system and method of wireless communication

Номер: US20120250645A1
Автор: Daniel Yellin, Guy Wolf, Ilan Sutskover, Nadav Shulman, Yona Perets
Принадлежит: Intel Corp

Briefly, according to embodiments of the invention, there is provided a wireless communication system and a method to receive by a base station from a first mobile station a first chain of data symbols transmitted by at least two antennas and having a first transmit diversity, to receive from a second mobile station a second chain of data symbols transmitted by at least two antennas and having a second transmit diversity. Both first and second chains of data symbols are transmitted from the first and second mobile stations at the same time, modulated according to an Orthogonal Frequency Division Multiplexing (OFDM) scheme and encoded by a space time block codes scheme.

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Номер записи: 38
04-10-2012 дата публикации

Payload for a multi-beam satellite

Номер: US20120252356A1
Автор: Emmanuel Lance, Hector Fenech
Принадлежит: EUTELSAT SA

A payload includes one or more antennas for receiving polarized radiofrequency signals; a device for regenerating radiofrequency signals by filtering, frequency transposition, and amplification; and antennas for transmitting the regenerated radiofrequency signals to one or more terrestrial terminals. The regeneration device includes a plurality of regeneration channels, each channel including an amplification device capable of amplifying a plurality of radiofrequency signals having separate frequency bands, and in that the transmission antennas are capable of transmitting regenerated radiofrequency signals, via a single regeneration channel, to non-contiguous basic coverage areas, respectively, the basic coverage areas belonging to a single cellular layout that uses at least two separate frequency bands and two separate polarizations.

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Номер записи: 39
04-10-2012 дата публикации

Transmitter for communications system

Номер: US20120252381A1
Автор: Kimihiko Imamura, Ryota Yamada, Toshizo Nogami
Принадлежит: Kimihiko Imamura, Ryota Yamada, Toshizo Nogami

An rf signal transmitter for transmitting rf signals through a plurality of antennas is described, which comprises: a transmit section adapted to selectively set, with respect to an input signal, the initial phase of an output to at least one of said antennas depending on a time or frequency region used for communication and to provide delay to the output on an antenna-by-antenna basis and on the basis of a transmission timing or a transmission frequency; and a quality information receive section for receiving quality information from destination station, i.e., a wireless terminal unit, said quality information concerning the rf signal transmitted from said transmit section and received at said destination station.

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Номер записи: 40
11-10-2012 дата публикации

Method and apparatus of system scheduler

Номер: US20120257596A1
Автор: Daniel Yellin, Guy Wolf, Ilan Sutskover, Nadav Shulman, Yona Perets
Принадлежит: Intel Corp

Briefly, according to embodiments of the invention, there is provided a wireless communication system and a method to receive by a base station from a first mobile station a first chain of data symbols transmitted by at least two antennas and having a first transmit diversity, to receive from a second mobile station a second chain of data symbols transmitted by at least two antennas and having a second transmit diversity. Both first and second chains of data symbols are transmitted from the first and second mobile stations at the same time, modulated according to an Orthogonal Frequency Division Multiplexing (OFDM) scheme and encoded by a space time block codes scheme.

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Номер записи: 41
08-11-2012 дата публикации

System architecture for providing communications in a wireless communication network

Номер: US20120281672A1
Автор: Michael Ohm, Michael Schmidt, Thorsten Wild
Принадлежит: Individual

Method for performing communications in a wireless communication network ( 1 ), comprising: receiving mobility information about at least one moving mobile station ( 5 ) in a mobility server ( 8 ) of the wireless communications network ( 1 ); using the mobility information from the mobility server ( 8 ) for calculating antenna weights to be applied to antenna elements ( 3 i ) of an antenna array ( 3 ) for steering a beam ( 3 a ) generated by the antenna array ( 3 ) to the moving mobile station ( 5 ) preferably using space-division multiple access, SDMA. The invention also relates to a base station ( 2 ), to a mobile station ( 5 ), and to a wireless communication network ( 1 ).

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Номер записи: 42
22-11-2012 дата публикации

Amplify-and-Forward Relaying in Communication Systems

Номер: US20120294224A1
Автор: Francisco R.P. Cavalcanti, Pedro R.S. Lopes, Peter Larsson, Yuri C.B. Silva
Принадлежит: Telefonaktiebolaget LM Ericsson AB

Improved amplify-and-forward relaying in a communication network is described, including an example network of multiple single-antenna mobile stations, a multi-antenna relay station, and a multi-antenna base station. Bi-directional communication with improved transmission efficiency is enabled by suitable transmit/receive processing at the relay station without drawbacks of current relaying techniques. Linear transmit and receive processing matrices are disclosed, and it is shown that the numbers of antennas at the relay station and the base station can be substantially the same without reducing network capacity, closely matching the performance for low and high signal to noise ratios of current techniques that require the relay station to have twice as many antennas as the base station.

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Номер записи: 43
29-11-2012 дата публикации

Transmission method on the uplink of an aircraft

Номер: US20120303747A1
Автор: Christian Turpaud, Julie Facon, Luc Emberger, Lucas Babelaere, Sebastien Delautier
Принадлежит: AIRBUS OPERATIONS SAS

A method for transmitting data, between an on-board segment on board an aircraft and on the ground, via a plurality of access networks. The on-board segment transmits to the ground information providing the association between the access networks and the corresponding IP addresses of the aircraft via these different networks. This information is used by a segment on the ground to make up and update a look-up table between identifiers of the access network and IP addresses of the aircraft. For transmitting a packet on the uplink, the recipient IP address is selected from IP addresses appearing in the look-up table.

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Номер записи: 44
06-12-2012 дата публикации

Relay frame structure for supporting transparent and bidirectional relays

Номер: US20120307694A1
Автор: Ki-Dong Lee, Li-Hsiang Sun
Принадлежит: LG ELECTRONICS INC

A method for transmitting data includes receiving at a first relay station first data from a parent station during a downlink period comprising a plurality of downlink zones. A network coding zone is one of the plurality of downlink zones and is located at an end of the downlink period, and the first data is received in at least one of the plurality of downlink zones other than the network coding zone. The method further includes receiving at the first relay station from a child station, second data during an uplink zone, and transmitting third data by the first relay station to the child station, during the network coding zone using a resource. The method further includes transmitting the third data to the parent station, during the network coding zone, using the resource. The third data results from the first data being effectively logically XOR-ed to the second data.

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Номер записи: 45
06-12-2012 дата публикации

Mobile repeater system and method having geophysical location awareness without use of gps

Номер: US20120309293A1
Автор: Matthew Melester, Thomas Kummetz
Принадлежит: Individual

A repeater system and method for implementing within a mobile platform includes repeater circuitry configured for repeating signals between devices and signal sources such as base transceiver stations. The repeater circuitry has a plurality of configurable settings for controlling operation of the repeater circuitry. Movement sensors sense the movement of the mobile platform and controller circuitry is configured to use inputs from the movement sensors to determine a current path of the mobile platform and to compare the determined current path to the known path information for the mobile platform for determining the location of the mobile platform and repeater system to vary the configurable settings of the repeater system based upon the determined location. Other information such as identification information from a signal source or information from the mobile platform are also used to vary the configuration and configurable settings of the repeater system.

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Номер записи: 46
13-12-2012 дата публикации

Interference wave suppressing apparatus, relay apparatus, relay system, and interference wave suppressing method

Номер: US20120314824A1
Автор: Akinori Fujimura
Принадлежит: Mitsubishi Electric Corp

An interference wave suppressing apparatus includes a digital demultiplexing unit configured to demultiplex a reception signal into demultiplexed signals having predetermined bandwidth, an interference-wave detecting unit configured to determine, for each of the demultiplexed signals, based on a power value, whether an interference wave is present, an interference-wave suppressing unit configured to change a signal value of the demultiplexed signal, in which the interference-wave detecting unit determines that an interference wave is present, to a value equal to or smaller than a predetermined value, output the demultiplexed signal, and output the demultiplexed signal, in which the interference-wave detecting unit determines that an interference wave is absent, and a digital multiplexing unit configured to multiplex the signals output from the interference-wave suppressing unit.

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Номер записи: 47
20-12-2012 дата публикации

Relay station, base station, mobile station, communication system, and communication method

Номер: US20120322363A1
Автор: Hitoshi Yokoyama, Koji TSUBOUCHI
Принадлежит: Fujitsu Ltd

A relay station capable of communicating with a first base station, a second base station, and a mobile station, includes a relay unit configured to relay communication between the first base station and the mobile station; a receiving unit configured to receive load information concerning the second base station; and a changeover unit configured to change, from the first base station over to the second base station, a communication counterpart of the mobile station, communicating with the mobile station via the relay unit, the communication counterpart being changed based on the received load information.

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Номер записи: 48
20-12-2012 дата публикации

Airborne onboard base transceiver station for mobile communication

Номер: US20120322443A1
Автор: Mikael Lagerman
Принадлежит: Telefonaktiebolaget LM Ericsson AB

The invention refers to a base station (BTS) and a method for a BTS, for a cellular communication system comprising a user equipment (UE) onboard an aircraft, when at a predetermined altitude, and a terrestrial network. The invention is characterised in that the BTS is arranged to be an airborne onboard BTS comprising a screening device generating a first signal (S 1 ) matched to screen a second signal (S 2 ) from the terrestrial network at a predetermined altitude. The onboard BTS also comprises a signal generator generating a third signal (S 3 ) stronger than both the first signal (S 1 ) and the second signal (S 2 ), the onboard BTS arranged to establish a communication link with the UE via the third signal (S 3 ).

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Номер записи: 49
27-12-2012 дата публикации

Terrestrial Based High Speed Data Communications Mesh Network

Номер: US20120327906A1
Автор: Donald Alcorn
Принадлежит: SMARTSKY NETWORKS LLC

A network for providing high speed data communications may include multiple terrestrial transmission stations that are located within overlapping communications range and a mobile receiver station. The terrestrial transmission stations provide a continuous and uninterrupted high speed data communications link with the mobile receiver station employing a wireless radio access network protocol.

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Номер записи: 50
17-01-2013 дата публикации

Multi-site mimo cooperation in cellular network

Номер: US20130016662A1
Автор: HUA Xu, Jiangei Ma, Mohammadhadi Baligh
Принадлежит: Individual

In a cellular communications network comprising a plurality of transmitting sites wherein each transmitting site comprises at least one antenna, a method of serving a given data stream to a target-mobile terminal, comprising: designating at least two of the plurality of transmitting sites as cooperating sites; assigning tones to each transmitting site from a sub-band associated with the cooperating sites; dividing the data stream into at least two sub-data streams, each of the sub-data streams for transmission over selected tones; and interlacing tones of the cooperating sites in accordance with a selected one of a time switching and a frequency switching transmit diversity technique.

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Номер записи: 51
17-01-2013 дата публикации

Capacity maximization for a unicast spot beam system

Номер: US20130017778A1
Автор: Mark J. Miller
Принадлежит: Viasat Inc

Methods, systems, and apparatuses are presented for improved satellite communications. The satellite system may comprises at least one gateway, a satellite in orbit configured to communicate with the at least one gateway and provide a plurality of spot beams, and a plurality of subscriber terminals. The spot beams may include a first spot beam to illuminate a first region and a second spot beam to illuminate a second region adjacent to and overlapping with the first region. The first spot beam as sent to at least one subscriber terminal may be affected by (1) interference from other signal sources including the second spot beam at a signal-to-interference ratio C/I and (2) noise at a signal-to-noise ratio C/N. Reception of signals from the first spot beam by the at least one of the first plurality of subscriber terminals may be interference-dominated such that C/I is less than C/N.

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Номер записи: 52
21-02-2013 дата публикации

Method and Apparatus for Use in a Mobile Communications System Comprising a Relay Node

Номер: US20130044674A1
Автор: Bernhard Raaf, Frank Frederiksen, Jeroen Wigard, Oumer Teyeb, Simone Redana, Vinh Van Phan
Принадлежит: NOKIA SIEMENS NETWORKS OY

A method selecting one of a plurality of communication options, each communication option providing a different division of resources between a first link between at least one relay node and a base station and a second link between said at least one relay node and a plurality of user equipment configured to communicate with said at least one relay node; and using said selected communication option to control the division of resources between said first and second links, wherein said using includes sending information to a user equipment to control an activity of that user equipment in dependence on said selected communication option

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Номер записи: 53
21-02-2013 дата публикации

Method, enodeb, and relay node for un subframe configuration processing

Номер: US20130044675A1
Автор: Junren Chang, Li Chai, Liangliang Zhang, Yajuan LI
Принадлежит: Huawei Technologies Co Ltd

A method and a relay node (RN) for Un subframe configuration processing are disclosed. The method includes: receiving, by an RN, a radio resource control (RRC) reconfiguration message sent by an eNodeB (eNB), where the RRC reconfiguration message includes subframe reconfiguration information of the RN; and applying, by the RN, a RRC reconfiguration immediately upon reception of the RRC reconfiguration message, and applying a Un subframe reconfiguration. The foregoing technical solution can implement the Un subframe configuration of the eNB and the RN and improve communication quality.

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Номер записи: 54
21-02-2013 дата публикации

Telecommunications System Comprising an Airborne Communication Node, Airborne Communication Node and Tactical Radio Node

Номер: US20130044677A1
Автор: GILBERT Multedo, Thierry Lucidarme
Принадлежит: Thales SA

A telecommunications system comprises a number of remote subnetworks, a subnetwork comprising at least one tactical radio node NRT serving as gateway between said subnetwork and a backbone network consisting of at least one airborne communication node. An NRT node communicates with the airborne communication node by converting the wave form of the signals to be transmitted outside the subnetwork being associated with it into a wave form used by the airborne communication node, said airborne communication node transmitting the duly received signal without modifying its wave form to at least one NRT node belonging to another subnetwork. A tactical radio communication node and an airborne communication node are also disclosed.

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Номер записи: 55
21-02-2013 дата публикации

Relay Station, Mobile Station, Wireless Communication System, And Load Distribution Method

Номер: US20130045674A1
Автор: Kenichiro Koyanagi
Принадлежит: Fujitsu Ltd

A relay station includes a load measuring unit configured to measure a load of the relay station; a load calculating unit configured to calculate, based on the load of the relay station and based on a load of an upstream base station or an upstream relay station directly connected to the relay station, a load reflecting a load of an upstream station; and a reporting unit configured to report the calculated load as load information to a mobile station or a downstream relay station.

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Номер записи: 56
07-03-2013 дата публикации

Methods and Apparatus for Interoperable Satellite Radio Receivers

Номер: US20130059525A1
Автор: Carl Scarpa, Edward Schell
Принадлежит: Sirius XM Radio Inc

Methods and apparatus are presented to allow one receiver architecture to be used for the reception of two different SDARS signals. Common receiver functions can be utilized to process each signal, thereby obviating the need to duplicate hardware elements. For example, it can be assumed that both signals will not be received at the same time, thus allowing for considerable hardware reuse and lowering the cost of an interoperable receiver.

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Номер записи: 57
21-03-2013 дата публикации

Apparatus and Methods for Satellite Communication

Номер: US20130069820A1
Автор: Wyler Gregory Thane
Принадлежит:

A communications system and method are disclosed that may include a constellation of satellites operating in a substantially equatorial, non-geostationary orbit; a plurality of ground stations configured to communicate with the satellites, at least one given ground station of the ground stations lacking a wired connection to any global communications network; and at least one gateway station coupled to a global communications network and to at least one said satellite, wherein each satellite includes at least one antenna having a steerable beam, the antenna being controllable to continuously direct a concentrated spot beam toward the given ground station. 1. A satellite communications system , comprising:a constellation of satellites operating in a substantially equatorial, non-geostationary orbit around the earth,wherein at least one said satellite comprises:a first antenna controllable to direct a first concentrated spot beam to at least one ground station;a second antenna controllable to direct a second concentrated spot beam to at least one gateway ground station; anda plurality of ground stations configured to communicate with said satellites, wherein at least one said ground station is configured to transfer communication connectivity away from a first satellite approaching a forbidden transmission range to a satellite in the constellation further from the forbidden transmission range.24-. (canceled)5. The satellite communications system of wherein the at least one satellite is operable to avoid interference with GEO satellite communication with a GEO sub-satellite point on the earth claim 1 , by communicating with ground stations on the earth having a minimum latitudinal angular separation from the GEO sub-satellite point.6. The satellite communications system of wherein the minimum latitudinal angular separation is 5 degrees.7. The satellite communications system of wherein the system is operable to avoid impinging on the communication reception of any ...

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Номер записи: 58
21-03-2013 дата публикации

Power control method in two-way relay network

Номер: US20130072113A1
Автор: Eui-Rim Jeong, Yong-Hoon Lee, Yong-Up Jang
Принадлежит: KT Corp

Provided is a method for power control in a two-way relay network. The power control method may maximize a minimum transmission rating and a synthesized transmission rating of the overall system when there are restrictions on the synthesized power of terminals and a repeater in the two-way relay network. The power control method may include determining a power ratio for allocating power to each terminal and a repeater for each subcarrier under restriction on synthesized power of the terminals and the repeater and determining power allocated for each subcarrier according to the determined power ratio.

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Номер записи: 59
28-03-2013 дата публикации

Data transmission and reception method and apparatus robust against phase noise for high efficiency satellite transmission

Номер: US20130077563A1
Автор: Deock Gil Oh, PanSoo Kim
Принадлежит: Electronics and Telecommunications Research Institute ETRI

A data transmission and reception apparatus is used for a high efficiency satellite transmission. The apparatus includes an initial phase calculation unit to calculate initial phase information using a preamble and a postamble of a data packet applied thereto, a symbol transition calculation unit to perform forward and backward metric operations using the initial phase information calculated by the initial phase calculation unit and a pilot symbol in the data packet to calculate a symbol transition of the data packet, and a phase error estimation unit to calculating a phase error using the pilot symbol in a spot where the pilot symbol is positioned, the calculated phase error being provided to the symbol transition calculation unit.

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Номер записи: 60
11-04-2013 дата публикации

Multi-Beam Active Phased Array Architecture with independant Polarization control

Номер: US20130088391A1
Автор: Corman David W., Saunders David, Zienkewicz Rob
Принадлежит: VIASAT, INC.

In an exemplary embodiment, a phased array antenna comprises multiple subcircuits in communication with multiple radiating elements. The radio frequency signals are independently adjusted for both polarization control and beam steering. In a receive embodiment, multiple RF signals of various polarizations are received and combined into at least one receive beam output. In a transmit embodiment, at least one transmit beam input is divided and transmitted through multiple radiating elements, with the transmitted beams having various polarizations. In an exemplary embodiment, the phased array antenna provides multi-beam formation over multiple operating frequency bands. The wideband nature of the active components allows for operation over multiple frequency bands simultaneously. 1. An independent polarization , dual-beam receive phased array antenna comprising:a first active power splitter and a second active power splitter in communication with a radiating element, wherein the first active power splitter receives a vertical beam signal and the second active power splitter receives a horizontal beam signal;a first active vector generator in parallel with a second active vector generator, wherein the first and second active vector generators are both in communication with the first active power splitter;a third active vector generator in parallel with a fourth active vector generator, wherein the third and fourth active vector generators are both in communication with the second active power splitter;a first active power combiner in communication with the first active vector generator and the third active vector generator, wherein the first active power combiner generates a first receive beam output;a second active power combiner in communication with the second active vector generator and the fourth active vector generator, wherein the second active power combiner generates a second receive beam output;wherein the first receive beam output of the first active power ...

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Номер записи: 61
11-04-2013 дата публикации

ACCESS NODE/GATEWAY TO ACCESS NODE/GATEWAY LAYER-2 CONNECTIVITY (END-TO-END)

Номер: US20130089024A1
Автор: Chandran Girish, Foxworthy Michael, Lau Jason
Принадлежит: VIASAT, INC.

Systems, methods, and apparatus for providing end-to-end L2 connectivity, are described. The system includes satellites configured to transmit data packets. The system further includes a first non-autonomous gateway in communication with the satellites. The first non-autonomous gateway is configured to receive the data packets from the satellites at L1, generate virtual tagging tuples within L2 packet headers of the data packets, and transmit the data packets each including a virtual tagging tuple. The system further includes a L2 switch in communication with the first non-autonomous gateway. The L2 switch is configured to receive the virtually tagged data packets and transmit the virtually tagged data packets. Further, the system includes a second non-autonomous gateway in communication with the L2 switch. The second non-autonomous gateway configured to receive the virtually tagged data packets and transmit the virtually tagged data packets to an entity based on the virtual tagging tuple associated with each of the virtually tagged packets. 120-. (canceled)21. A system for providing end-to-end layer-2 connectivity throughout a non-routed ground segment network connected to one or more satellites , the system comprising: a satellite modem termination system (SMTS) that demodulates the signals relayed from the bent pipe satellite and generates from the demodulated signals, a plurality of data packets having packet headers for layer-2 of the OSI-model (L2); and', 'a switch coupled with the SMTS that receives the plurality of data packets from the SMTS and adds virtual tagging tuples to the packet headers for each data packet of a subset of the plurality of data packets;, 'a first non-autonomous gateway configured for processing primarily below layer-3 of the OSI-model (L3), the first non-autonomous gateway in communication with a bent pipe satellite that receives signals from one or more user terminals and relays the signals to the first non-autonomous gateway at ...

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Номер записи: 62
11-04-2013 дата публикации

Method of determining precoding matrix and corresponding communication methods and devices

Номер: US20130089165A1
Автор: Di LV, Hongwei Yang, Jinhui Chen, Lu Wu, Yang Song
Принадлежит: Alcatel Lucent SAS

In order to improve the performance of the precoding scheme for closely-spaced cross-polarized CLA antennas, the invention proposes a new precoding codebook and precoding matrix. The invention also proposes a method for determining precoding matrix based on the new precoding codebook, and corresponding method and device for communicating by using this precoding matrix. The precoding codebook and matrix proposed in the invention has better performance.

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Номер записи: 63
18-04-2013 дата публикации

Method and system for implementing network attach of relay node

Номер: US20130094435A1
Автор: Deng Yun, Wang Guanzhou
Принадлежит: ZTE CORPORATION

The disclosure discloses a method and a system for implementing network attach of a Relay Node (RN). The method includes: the RN carries indication information of the RN in a message to be sent to a Donor eNodeB (DeNB) during an initial attach process, and the DeNB selects a Mobility Management Entity (MME) supporting the RN functionality for the RN according to the indication information of the RN. The disclosure makes minor changes to protocol and can make the RN smoothly attach a network to work. 1. A method for implementing network attach of a Relay Node (RN) , comprising:carrying, by the RN, indication information of the RN in a message to be sent to a Donor eNodeB (DeNB), during an initial attach process; andselecting for the RN, by the DeNB, a Mobility Management Entity (MME) supporting the RN functionality according to the indication information of the RN.2. The method according to claim 1 , further comprising:before the RN sends the message to the DeNB,selecting a cell to be attached according to a pre-configured base station list or cell list or according to information contained in a cell system broadcast message on whether attach of the RN is allowed, and initiating an initial attach to the DeNB to which the selected cell to be attached belongs.3. The method according to claim 1 , whereinthe message carrying the indication information of the RN sent from the RN to the DeNB comprises: a Radio Resource Control (RRC) connection setup complete message or an RRC connection request message.4. The method according to claim 1 , wherein the selecting for the RN claim 1 , by the DeNB claim 1 , an MME supporting the RN functionality according to the indication information of the RN comprises:configuring for the RN, by the DeNB, an RN dedicated parameter according to the indication information of the RN, after receiving the information.5. The method according to claim 1 , further comprising:after the DeNB selects the MME for the RN,selecting for the RN, by the MME, ...

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Номер записи: 64
18-04-2013 дата публикации

VDL2 Power Control

Номер: US20130094470A1
Автор: Dongsong Zeng
Принадлежит: Mitre Corp

Power control of a digital datalink system within an aeronautical telecommunication network is described herein. According to embodiments, the system is configured to calculate the transmission power of an air-based communication station, based on the transmission power used by a ground-based communication station, wherein the transmission power of the air-based communication station is sot to a decibel level higher than or equal to the transmission power of the ground-based communication station.

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Номер записи: 65
18-04-2013 дата публикации

Systems and Methods for Signal Frequency Division in Wireless Communication Systems

Номер: US20130094554A1
Автор: Paul A. KENNARD
Принадлежит: Aviat US Inc

An exemplary system comprises at least one antenna, first and second signal paths, and an N-plexer. The antenna may be configured to receive first and second diversity receive signals. The antenna is further configured to transmit first and second diversity transmit signals. The first signal path may have a frequency converter configured to downconvert the first diversity receive signal to an intermediate frequency and to upconvert the first diversity transmit signal to a radio frequency. The second signal path may have a frequency converter configured to downconvert the second diversity receive signal to an intermediate frequency and to upconvert the second diversity transmit signal to the radio frequency. The N-plexer may be configured to provide the first and second diversity receive signals to a cable and to provide from the cable the first and second diversity transmit signals to the first signal path and the second signal path, respectively.

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Номер записи: 66
18-04-2013 дата публикации

ANTENNA SELECTION BASED ON ORIENTATION, AND RELATED APPARATUSES, ANTENNA UNITS, METHODS, AND DISTRIBUTED ANTENNA SYSTEMS

Номер: US20130095875A1
Автор: REUVEN RAMI
Принадлежит:

Antenna apparatuses and related antenna units that include antenna selection based on orientation are disclosed. Related methods and distributed antenna systems are also disclosed. Antenna selection is provided between two or more antennas disposed in different polarization orientations according to orientation of the antenna unit in which the antennas are included. The antenna(s) oriented most closely to perpendicular to the ground in one embodiment may be selected for use in wireless communications with wireless client devices. In this manner, the antenna(s) employed in wireless communications is likely to be the closest in polarization to the polarization of wireless client device antennas. Otherwise, an unacceptable reduction in communications link quality with the wireless client devices may occur. 1. An antenna arrangement for distributing communications signals in a distributed antenna system , comprising:a first antenna arranged to have a first polarization orientation;a second antenna arranged to have a second polarization orientation different from the first polarization orientation of the first antenna;an orientation sensor configured to sense orientation with respect to ground and provide an at least one orientation signal indicative of the sensed orientation; andan antenna selection device configured to receive the at least one orientation signal and selectively couple one of the first antenna and the second antenna to a communications signal distributor for receiving and emitting communications signals to a wireless client device.2. The antenna arrangement of claim 1 , wherein the antenna selection device is further configured to selectively couple one of the first antenna and the second antenna to the communications signal distributor based on the orientation indicated in the at least one orientation signal.3. The antenna arrangement of claim 2 , wherein the antenna selection device is further configured to selectively couple the first antenna to the ...

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Номер записи: 67
25-04-2013 дата публикации

FORWARD AND REVERSE CALIBRATION FOR GROUND-BASED BEAMFORMING

Номер: US20130100879A1
Автор: Sayegh Soheil
Принадлежит: VIASAT, INC.

Methods and systems for calibrating the return and forward links of a satellite communication system are provided according to embodiments of the invention. The phase and/or amplitude variations caused by the return and forward links are calculated and/or estimated to aid in beamforming, such as ground-based beamforming. Calibration earth stations, distributed within one or more beam patterns, may be used to transmit calibration codes to the gateway to calibrate the return link. Return links variations may be estimated using a weighted minimum mean square algorithm at the gateway. Forward links may be calibrated with calibration codes transmitted from the gateway through a hybrid matrix to at least one calibration station. Forward calibration links may also calibrate for temperature-dependent signal variations such as diplexer variations at the satellite. 1. A method for ground-based calibration of a satellite forward link , the method comprising:transmitting a plurality of orthogonal codes from a gateway to a satellite, wherein each of the plurality of orthogonal codes are received at a unique feed at the satellite;multiplexing the plurality of orthogonal codes into a linear combination of the plurality of orthogonal codes at the satellite;transmitting the linear combination of the plurality of orthogonal codes to a plurality of calibration earth stations over a plurality of feeds;receiving the linear combination of the plurality of orthogonal codes at at least one calibration earth station; anddemultiplexing the linear combination of the plurality of orthogonal codes received at the at least one calibration earth station; anddetermining either or both of phase or amplitude shifts from the plurality of orthogonal codes.2. The method according to wherein:the plurality of orthogonal codes include at least one PN code;transmitting the linear combination of the plurality of orthogonal codes to a plurality of calibration earth stations over a plurality of feeds includes ...

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Номер записи: 68
02-05-2013 дата публикации

APPARATUS AND METHODS FOR POWER CONTROL IN SATELLITE COMMUNICATIONS SYSTEMS WITH SATELLITE-LINKED TERRESTRIAL STATIONS

Номер: US20130109300A1
Автор: Karabinis Peter D.
Принадлежит: ATC Technologies, LLC

A signal power control loop is provided for a link between a terrestrial station and a terminal when the terminal and a satellite are linked via the terrestrial station. The signal power control loop may control transmitted signal power of the terminal and/or the terrestrial station. In some embodiments, the signal power control loop controls transmitted signal power of the terminal and/or the terrestrial station independent of signal power control for a link between the terrestrial station and the satellite. 1. A wireless communications system comprising:a base station that is configured to communicate directly with a satellite, wherein the satellite is configured to communicate with terminals directly and to communicate with terminals indirectly via the base station;a first signal power controller that operates a first power control loop that controls transmitted signal power through a first communication link between the base station and a terminal; anda second signal power controller that operates a second signal power control loop that controls transmitted signal power through a combination of the first communication link and a second communication link between the base station and the satellite concurrent with operation of the first signal power control loop,a first demodulation and regeneration unit configured to demodulate a signal received from the satellite and to regenerate the demodulated signal to produce a first regenerated signal;a first modulator configured to modulate the first regenerated signal;a first power amplifier configured to amplify the modulated first regenerated signal for transmission to the terminal;a second demodulation and regeneration unit configured to demodulate a received signal from the terminal and to regenerate the demodulated signal to produce a second regenerated signal;a second modulator configured to modulate the second regenerated signal; anda second power amplifier configured to amplify the modulated second regenerated ...

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Номер записи: 69
02-05-2013 дата публикации

Method and system for switched combined diversity with a modal antenna

Номер: US20130109333A1
Автор: Abhishek Singh, Jeffrey Shamblin, Laurent Desclos, Sebastian Rowson
Принадлежит: Individual

A system and method for diversity implementation are provided, where diversity gains are obtained by using a hybrid of the switching technique and the combining technique in conjunction with the use of a modal antenna. The antenna system includes multiple antennas including at least one modal antenna that has multiple modes, and a processor for selecting one or more modes from the multiple modes associated with each of the at least one modal antenna, combining modes to form one or more combinations of modes, the modes in each of the one or more combinations including one of the one or more selected modes associated with each of the at least one modal antenna, and selecting one of the one or more combinations that optimizes correlation and/or a quality metric for diversity.

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Номер записи: 70
09-05-2013 дата публикации

METHOD AND DEVICE FOR SELECTING USER TERMINAL SO AS TO ENHANCE RECIPROCITY ERROR CALIBRATION BETWEEN UPLINK AND DOWNLINK

Номер: US20130114478A1
Автор: Luo Qinglin, Shi Jing, Zhao Yan
Принадлежит: ALCATEL LUCENT

The present invention provides a method and a device for selecting user terminal so as to enhance calibration for reciprocity error between uplink and down-link, in the purpose of enhancing the accuracy of calibration for reciprocity error between uplink and downlink in TDD system. Wherein, the method comprises the following steps: obtaining channel quality related information between a plurality of first user terminals and a first base station, wherein said channel quality related information is used for indicating channel qualities between said plurality of first user terminals and said first base station; selecting, at least one first user terminal as a calibration user terminal for calibrating said reciprocity error between uplink and downlink, according to said channel quality related information. 1. A method of selecting user terminal so as to enhance calibration for reciprocity error between uplink and downlink , in a network equipment in time division duplex communication systems , comprising:obtaining channel quality related information between a plurality of first user terminals and a first base station, wherein said channel quality related information is used for indicating channel qualities between said plurality of first user terminals and said first base station;selecting, at least one first user terminal as a calibration user terminal for calibrating said reciprocity error between uplink and downlink, according to said channel quality related information.2. A method according to claim 1 , wherein when said first base station works at single cell mode claim 1 , said selecting further comprises:selecting at least one candidate user terminal from said plurality of first user terminals according to said channel quality related information, wherein the channel quality between said at least one candidate user terminal and said first base station is greater than a first predetermined threshold;judging whether the number of said at least one candidate user ...

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Номер записи: 71
09-05-2013 дата публикации

System and method for feedback cancellation in repeaters

Номер: US20130114651A1
Автор: Chris Ranson, Thomas Kummetz, Van Erick Hanson
Принадлежит: Andrew LLC

An apparatus for repeating signals includes a receive antenna for receiving input signals, processing circuitry for processing the input signals to form repeated signals, and a transmit antenna for transmitting the repeated signals. The processing circuitry includes an adaptive digital filter configured to generate cancellation signals that are added to the input signals to cancel unwanted feedback signals from the input signals. A frequency shifting circuit adds a frequency shift to the input signals, after the addition of the cancellation signals, to form repeated signals that are frequency shifted from the input signals. A digital signal processor is coupled to the adaptive digital filter for digitally adapting the filter. The digital signal processor utilizes the frequency shift of the transmission signals to adapt the adaptive digital filter.

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Номер записи: 72
16-05-2013 дата публикации

MACHINE TYPE COMMUNICATION SUPPORT METHOD AND APPARATUS

Номер: US20130121317A1
Автор: KIM Il Gyu, LEE Jun Hwan, LEE Moon Sik
Принадлежит: Electronics and Telecommunications Research Institute

Provided are a machine type communication (MTC) support method and apparatus capable of providing efficient MTC service. First, when a base station transmits a subframe to which an MTC-physical control format indicator channel (PCFICH) is allocated using an MTC-PCFICH code that is cyclic-shifted on the basis of a control format indicator (CFI) to MTC user equipment (UE), the MTC UE detects the MTC-PCFICH from the received subframe by performing blind decoding of a cyclic shift, and detects a region occupied by a legacy physical downlink control channel (PDCCH) on the basis of the detected MTC-PCFICH. Accordingly, it is possible to support efficient MTC service in a Third Generation Partnership Project (3GPP) Long Term Evolution (LTE)-based mobile communication system while maintaining compatibility with a legacy LTE station. 1. A machine type communication (MTC) support method performed in a base station , comprising:allocating physical channels of MTC user equipment (UE) including information about a number of orthogonal frequency division multiplexing (OFDM) symbols occupied by a physical downlink control channel (PDCCH) of a station, to a physical downlink shared channel (PDSCH) region between the base station and the station to transmit data to the MTC UE; andtransmitting, at the physical channels of the MTC UE, an allocated subframe.2. The MTC support method of claim 1 , wherein allocating the physical channels of the MTC UE includes:cyclic-shifting a predetermined MTC-physical control format indicator channel (PCFICH) code on the basis of a control format indicator (CFI) for the station; andallocating an MTC-PCFICH using the cyclic-shifted MTC-PCFICH code.3. The MTC support method of claim 2 , wherein the MTC-PCFICH code includes information about at least one of a number of OFDM symbols claim 2 , a number of resource blocks (RBs) claim 2 , and a number of subcarriers occupied by an MTC-PDCCH.4. The MTC support method of claim 1 , wherein allocating the ...

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Номер записи: 73
16-05-2013 дата публикации

METHODS AND APPARATUS FOR TRANSMISSION OF GROUPS OF CELLS VIA A SWITCH FABRIC

Номер: US20130121343A1
Автор: Chen Chi-Chung Kenny, Frailong Jean-Marc, Ofelt David J., SINDHU Pradeep, Thomas Philip A., Thomas Sarin, Vegesna Srihari, Wu Chang-Hong
Принадлежит: JUNIPER NETWORKS, INC.

In one embodiment, a method can include receiving at an egress schedule module a request to schedule transmission of a group of cells from an ingress queue through a switch fabric of a multi-stage switch. The ingress queue can be associated with an ingress stage of the multi-stage switch. The egress schedule module can be associated with an egress stage of the multi-stage switch. The method can also include determining, in response to the request, that an egress port at the egress stage of the multi-stage switch is available to transmit the group of cells from the multi-stage switch. 1. An apparatus , comprising:an egress schedule module implemented in at least one of a memory or a processing device, the egress schedule module configured to receive, from an ingress schedule module associated with an ingress stage of a multi-stage switch fabric, a request to schedule transmission of a group of cells from an ingress queue, the request associated with a sequence value representing an order of the group of cells within a plurality of cells in the ingress queue, the egress schedule module being associated with an egress stage of the multi-stage switch fabric,the egress schedule module configured to define, in response to the request, a response associated with the sequence value when an egress port associated with the egress stage of the multi-stage switch fabric is available to transmit the group of cells, the egress schedule module configured to send the response to the ingress schedule module.2. The apparatus of claim 1 , wherein the multi-stage switch fabric has a Clos network architecture.3. The apparatus of claim 1 , wherein each cell from the group of cells is associated with a common destination address.4. The apparatus of claim 1 , wherein the request includes a quantity value corresponding to a number of cells included in the group of cells claim 1 , the egress schedule module configured to define the response based on the quantity value included in the request ...

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Номер записи: 74
16-05-2013 дата публикации

Portable radio-frequency repeater

Номер: US20130122803A1
Автор: Ian James Forster
Принадлежит: Avery Dennison Corp

A portable radio-frequency repeater includes a housing and a transceiver. The transceiver is disposed at least partially within the housing and configured to alternatively operate in a transmitting mode and a sleep mode. The transceiver includes an antenna and a control unit. The control unit is in electrical communication with the antenna. When the transceiver operates in the transmitting mode, the control unit is configured to receive an RFID signal from the antenna, convert the RFID signal into a converted RFID signal, and transmit the converted RFD signal to the antenna. When the transceiver operates in the sleep mode, the control unit is configured to detect an interrogation signal from the antenna and not to transmit any converted RFID signal to the antenna.

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Номер записи: 75
23-05-2013 дата публикации

Multi-relay transmission apparatus and method using interference alignment

Номер: US20130128802A1
Автор: Joun Sup PARK, Seong Ho Park, Young Chai Ko
Принадлежит: Samsung Electro Mechanics Co Ltd

There are provided a multi-relay transmission apparatus and method. The multi-relay transmission apparatus includes: a source node repeatedly alternately performing a first phase in which preceding data is transmitted during a first transmission period equivalent to a transmission period during which unit frames are transmitted and a second phase in which subsequent data that follows the preceding data is transmitted during a second transmission period that follows the first transmission period; and a relay network including a plurality of relay nodes receiving data from the source node, in which, in the first phase, a predetermined relay node, among the plurality of relay nodes, receives the preceding data from the source node and the remaining relay nodes, among the plurality of relay nodes, and in the second phase, the remaining relay nodes receive the subsequent data from the source node.

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Номер записи: 76
23-05-2013 дата публикации

SYSTEM AND METHOD FOR SCALABLE MULTIFUNCTIONAL NETWORK COMMUNICATION

Номер: US20130128897A1
Автор: Fellows Jonathan, Tiernan James C.
Принадлежит: LA JOLLA NETWORKS, INC.

A system and method for scalable multifunctional network communication between presentation devices and service providers are disclosed. A group of consumer premise equipment (CPE) units are coupled to the presentation devices, and a headend control computer receives upstream messages from the CPE units and for sending downstream messages to the CPE units. A group of service provider control subsystems interface between the headend control computer and the service providers. The head end control computer receives messages from the CPE units and transports them to the service provider control subsystems, and the headend control computer receives messages from the service provider control subsystems and transports them to the CPE units. 1115-. (canceled)116. A Consumer Premise Equipment (CPE) , comprising:a receiver configured to receive one or more messages; anda memory configured to store a request queue update message received from a headend unit, the request queue update message including requests for transmission time intervals for transmissions from one or more other CPE units and at least some of the requests being processed at the headend unit to update a master request queue;a processor configured to apply an algorithm to determine that the memory is updated to substantially match a master request queue at the headend unit; anda transmitter configured to transmit an upstream message during at least one transmission time interval assigned to the CPE and stored in the memory.117. The CPE according to claim 116 , wherein the CPE is adapted for a burst interval on the uplink channel.118. The CPE according to claim 116 , wherein the CPE is adapted for an Aloha slot burst interval.119. The CPE according to claim 116 , wherein the CPE is configured to operate with one of uplink and downlink channels adapted for time division multiple access.120. The CPE according to claim 116 , wherein the CPE is configured to operate with an uplink channel that is locked to the ...

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Номер записи: 77
30-05-2013 дата публикации

Method for the optimized allocation of a satellite communication resource and associated communication system

Номер: US20130136054A1
Автор: Mathieu Gineste
Принадлежит: Thales SA

A method for the time allocation of a satellite communication resource and an associated communication system. The method includes transmitting, by the terminal, a request indicating the time of input of a message into the system and its time requirement, and allocating the communication resource to the message, by performing a processing of the requests by a message scheduling calculation taking into account the time of input of the message into the system and its time requirement.

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Номер записи: 78
30-05-2013 дата публикации

Time division receiver and time division receiving method

Номер: US20130136118A1
Автор: Tadashi Morita
Принадлежит: Panasonic Corp

Provided are a time division receiver and a time division receiving method capable of mitigating leaks between branches for a time division multiplexed signal for which a plurality of branches have been time-division multiplexed even when processing using a single high-frequency circuit. In a time division receiver ( 100 A), mixers ( 120 - 1 and 120 - 2 ) down-convert a time division multiplexed signal for which a plurality of branch signals have been time-division multiplexed. Time division separation units ( 130 - 1 and 130 - 2 ) separate the time division multiplexed signal which has been down-converted at the mixers ( 120 - 1 and 120 - 2 ) into branches, respectively. A residual charge initialization unit ( 160 ) initializes charges that are residual when a first branch signal passes for parasitic capacitances that occur in channels between the mixers ( 120 - 1 and 120 - 2 ) and the time division separation units ( 130 - 1 and 130 - 2 ) to the residual charges before passing of a second branch signal.

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Номер записи: 79
20-06-2013 дата публикации

ARTIFICIAL ELECTROMAGNETIC MATERIAL

Номер: US20130154902A1
Автор: Kou Chaofeng, Liu Ruopeng, Luan Lin
Принадлежит:

An artificial electromagnetic material includes at least one material sheet. Each material sheet includes a substrate and a plurality of artificial microstructures attached to the substrate. Each substrate is virtually divided into multiple of substrate units arranged into an array. A pair of artificial microstructures is attached to each substrate. The pair of artificial microstructures includes a first artificial microstructure and a second artificial microstructure with different shapes. The dielectric constant of artificial electromagnetic materials gradually increases from zero in a certain frequency range, therefore the material has a low dielectric constant in the certain frequency range and can meet some needs of special situation. 1. An artificial electromagnetic material comprising: at least one material sheet , each material sheet comprising a substrate and a plurality of artificial microstructures attached to the substrate , each substrate being virtually divided into multiple of substrate units arranged in an array , a pair of artificial microstructures being attached to each substrate unit , the pair of artificial microstructures comprising a first artificial microstructure and a second artificial microstructure having different shapes.2. The artificial electromagnetic material of claim 1 , wherein the first artificial microstructure comprises an I-shape structure and two split ring structures claim 1 , two terminals of each split ring structure toward each other to form an opening claim 1 , and two openings of the two split ring structures face each other claim 1 , the two split ring structure connected with an intermediate connecting line of the I-shape structure.3. The artificial electromagnetic material of claim 2 , wherein the split ring structure of the first artificial microstructure comprises a right angle or an arch bending part.4. The artificial electromagnetic material of claim 1 , wherein the second artificial microstructure comprises four ...

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Номер записи: 80
27-06-2013 дата публикации

Method for Transmitting a Data Signal in a MIMO System

Номер: US20130163691A1
Автор: Christian Drewes, Markus Mueck, WEN Xu
Принадлежит: Christian Drewes, Markus Mueck, WEN Xu

A method for transmitting a data signal by a transmission unit of a wireless multiple-input/multiple-output (MI MO) communication system. The communication system includes the transmission unit and a reception unit, the transmission unit having a plurality of transmission antennas and the reception unit having a plurality of reception antennas. The method includes performing a first transmission of a data signal, the first transmission including transmitting the data signal by each one of the plurality of transmission antennas, and performing a second transmission of the data signal at a time later than the first transmission, the second transmission including transmitting at least one spectrally modified signal variant of the data signal by at least one antenna of the plurality of transmission antennas.

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Номер записи: 81
27-06-2013 дата публикации

ANTENNA

Номер: US20130163705A1
Автор: Stirland Simon John
Принадлежит: ASTRIUM LIMITED

A phased array antenna for providing a radiation pattern having at least one communication beam, includes a plurality of antenna elements, each with an antenna element signal having a phase relationship and an amplitude relationship to the other element signals; a digital signal processing arrangement providing a digital beamforming network; and an analogue beamforming network arranged to reduce exposure of the digital signal processing arrangement to an interfering signal. Analogue beamforming weights are selected to generate a null in the radiation pattern in a direction corresponding to the interfering signal. 1. A phased array antenna for providing a radiation pattern having at least one communication beam , the antenna comprising:a plurality of antenna elements, wherein each antenna element will have an antenna element signal having a phase relationship and an amplitude relationship to the other element signals;a digital signal processing arrangement for providing a digital beamforming network; andan analogue beamforming network arranged for reducing exposure of the digital signal processing arrangement to an interfering signal, the analogue beamforming network being configured to apply analogue beamforming weights selected to generate a null in a radiation pattern in a direction corresponding to the interfering signal to signals received from said antenna elements, and the digital beamforming network being configured for applying digital beamforming weights for each of said at least one communication beam to signals received from said analogue beamforming network such that a composite radiation pattern of the antenna will provide said at least one communication beam.2. A phased array antenna according to claim 1 , wherein said antenna elements are partitioned into a plurality of overlapping subarrays claim 1 , each subarray comprising:a subset of all the antenna elements, said analogue beamforming network being configured to allocate to elements of each ...

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Номер записи: 82
08-08-2013 дата публикации

Mapping method and apparatus for resource status process

Номер: US20130201900A1
Автор: Dajun Zhang, Guoqing Li, Wei Bao
Принадлежит: China Academy of Telecommunications Technology CATT

The present invention discloses a mapping method and apparatus for resource status process, and the method comprises the following steps: DeNB receives resource status information from RN; said DeNB acquires the address of source eNB according to said resource status information and context information; said DeNB sends said resource status information to said source eNB according to the address of said source eNB. In the present invention, context information on DeNB is established for source eNB to enable DeNB to route resource status response message or resource status report to correct source eNB apparatus according to context information.

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Номер записи: 83
08-08-2013 дата публикации

Communication system and transmission unit

Номер: US20130201976A1
Автор: Tadashi Matsumoto, Takeshi Sugiyama
Принадлежит: Panasonic Corp

A signal transceiving section transmits a transmission signal to a transmission path, each frame in the transmission signal is divided into a plurality of periods in a time axis direction, and the plurality of periods includes superimposing period for superimposing a superimposed signal. A transmission unit includes a signal adjustment section for changing the proportion of the superimposing period in one frame of the transmission signal. The signal adjustment section adjusts the proportion of the superimposing period in accordance with a transmission state of the superimposed signal transmitted between second communication terminals. The signal adjustment section may adjust the proportion of the superimposing period so that the proportion of the superimposing period in one frame of the transmission signal increase with increasing the volume of transmission data transmitted between the second communication terminals through the superimposed signal.

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Номер записи: 84
08-08-2013 дата публикации

CONTROL CIRCUIT, IMPEDANCE ADJUSTING CIRCUIT, IMPEDANCE AUTOMATIC ADJUSTING CIRCUIT, RADIO TRANSCEIVER CIRCUIT, CONTROL METHOD, IMPEDANCE ADJUSTING METHOD, IMPEDANCE AUTOMATIC ADJUSTING METHOD, AND RADIO TRASCEIVING METHOD

Номер: US20130203362A1
Автор: MOCHIZUKI Satoshi
Принадлежит: YOKOGAWA ELECTRIC CORPORATION

There is provided a control circuit () including: a cell area (A) comprising a plurality of cells () arranged therein, each of the cells including: a first conductor () having at least one capacitance component (C, C); a second conductor () connected to the first conductor and having an inductance component; and a feed line () provided to be in non-contact with the first conductor and the second conductor, wherein a size of each of the cells is smaller than a wavelength of a signal to be influenced by the cells; and at least one feed controller () configured to control at least one of permittivity and permeability of the cell area by changing the amount of a power supply provided to the feed line of each of the cells. 1. A control circuit comprising: a first conductor having at least one capacitance component;', 'a second conductor connected to the first conductor and having an inductance component; and', 'a feed line provided to be in non-contact with the first conductor and the second conductor, wherein a size of each of the cells is smaller than a wavelength of a signal to be influenced by the cells; and, 'a cell area comprising a plurality of cells arranged therein, each of the cells comprisingat least one feed controller configured to control at least one of permittivity and permeability of the cell area by changing the amount of a power supply provided to the feed line of each of the cells.2. The control circuit of claim 1 , wherein the second conductor is formed as a via conductor which is short-circuited to a common potential for the respective cells claim 1 , and the feed line is in non-contact with the via conductor.3. The control circuit of or claim 1 , wherein the first conductor is formed in an approximately 8-shape having at least one air gap.4. An impedance adjusting circuit comprising:{'claim-ref': [{'@idref': 'CLM-00001', 'claim 1'}, {'@idref': 'CLM-00002', '2'}], 'the control circuit of or ; and'}a signal line which is in non-contact with the cell ...

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Номер записи: 85
15-08-2013 дата публикации

Expansion assembly for mimo system

Номер: US20130207875A1
Автор: Lee-Chuan CHANG
Принадлежит: Transystem Inc

The disclosure provides an expansion assembly configured to increase a transmitting distance of a MIMO system, the expansion assembly comprises N first RF front end units, N second RF front end units, a first power divider and combiner, and a second power divider and combiner. The first power divider and combiner connects with each of the first RF front end units, for delivering a first signal polarized in a first direction to the each of the first RF front end units. The second power divider and combiner connects with each of the second RF front end units, for delivering a first signal polarized in a first direction to the each of the second RF front end units. Accordingly, the first and second signal polarized in a second directions are capable of being transmitted in different directions, so as to implement the omni-directional transmission and increase the transmission distance.

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Номер записи: 86
22-08-2013 дата публикации

Information processing apparatus and information processing method, and non-transitory computer readable medium storing information processing program

Номер: US20130215989A1
Автор: Tetsuhiko Miyatani, Toshifumi Sato
Принадлежит: NEC Corp

Transmission channel estimation is performed for NT×NR reception signals and estimated transmission channel values are thereby output. The estimated transmission channel values are divided into N groups of NT×M estimated transmission channel values and a covariance matrix with M rows and N columns is obtained for each of the estimated transmission channel value groups. The N covariance matrixes are averaged over a predetermined range in terms of at least a time or a frequency (first averaging). Eigenvectors are generated based on respective N averaging outputs. Transmission channels between base station antennas and terminal antennas are generated from the eigenvectors and the estimated transmission channel values. Covariance matrixes are obtained for the generated transmission channels. The covariance matrixes are averaged over a different range from the range used in the first averaging (second averaging) and a beam forming weight is obtained by combining the generated eigenvectors.

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Номер записи: 87
22-08-2013 дата публикации

Canceling interference between a plurality of signals in a communication system

Номер: US20130216012A1
Автор: Dan Weinholt
Принадлежит: Telefonaktiebolaget LM Ericsson AB

The present solution relates to a method in a communication node ( 201, 204, 210, 213 ) for canceling interference between a plurality of signals in a communication system ( 200 ). The communication node receives ( 501 ), at each of a plurality of receiver antennas ( 407 ), a respective signal. The communication node ( 201, 204, 210, 213 ) cancels ( 502 ) a first part of interference between the plurality of received signals. Then, the interference cancelled signals and the received signals are filtered ( 504 ) before a second part of interference between the filtered signals is cancelled ( 505 ).

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Номер записи: 88
29-08-2013 дата публикации

HIGH-GAIN WIDEBAND ANTENNA APPARATUS

Номер: US20130222200A1
Автор: JU JeongHo
Принадлежит: Electronics and Telecommunications Research Institute

Disclosed is a high-gain wideband antenna apparatus. The high-gain wideband antenna apparatus, includes: a feeding antenna configured to radiate a signal; a cover configured to be disposed on a front surface of the feeding antenna based on a radiation direction of the signal and including a conductor pattern formed in a specific shape; and a ground surface configured to be disposed on the feeding antenna based on the radiation direction of the signal. By this configuration, the conductor patterns are approximately configured on both surfaces of a dielectric material to control a phase of a reflection coefficient in a specific frequency band, thereby increasing a gain and a bandwidth of an antenna and metal surfaces are additionally mounted on sides of a feeding antenna, thereby improving a front back ratio of the antenna. 1. A high-gain wideband antenna apparatus , comprising:a feeding antenna configured to radiate a signal;a cover configured to be disposed on a front surface of the feeding antenna based on a radiation direction of the signal and including a conductor pattern formed in a specific shape; anda ground surface configured to be disposed on a rear surface of the feeding antenna based on the radiation direction of the signal.2. The high-gain wideband antenna apparatus of claim 1 , wherein the conductor patterns are formed in different shapes on top and bottom surfaces of a dielectric substrate configuring the cover.3. The high-gain wideband antenna apparatus of claim 1 , wherein the conductor patterns are formed by repeatedly arranging preset unit cells.4. The high-gain wideband antenna apparatus of claim 3 , wherein the conductor patterns are formed by non-uniformly arranging the sizes of the unit cells.5. The high-gain wideband antenna apparatus of claim 1 , further comprising: metal wall surfaces disposed at sides of the feeding antenna based on a radiation direction of the signal.6. A high-gain wideband antenna apparatus claim 1 , comprising:a feeding ...

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Номер записи: 89
05-09-2013 дата публикации

Multiple Return Link

Номер: US20130229978A1
Автор: Battista Rich, Brosius John W., Shankar Uday
Принадлежит: SkyBitz, Inc.

A system and method for improving efficiency of satellite communications is described. In one embodiment, multiple return links are associated with a single forward link to reduce communications costs. 1. A satellite communications method , comprising:transmitting a single message to a plurality of mobile terminals in a first direction on a satellite link having a higher communication cost, the single message including a common query for each of the plurality of mobile terminals to return a position report regarding their respective locations; andreceiving, in response to the single message, a plurality of position reports from the plurality of mobile terminals in a second direction having a lower communication cost.2. The method of claim 1 , wherein the plurality of communications in the second direction are on a plurality of different frequencies3. The method of claim 1 , wherein the plurality of communications in the second direction occur after a fixed delay after a single communication in the first direction.4. The method of claim 1 , wherein the plurality of communications in the second direction include positioning information.5. The method of claim 1 , wherein the plurality of communications in the second direction include code phase information.6. The method of claim 1 , wherein the plurality of communications in the second direction include sensor information.7. A satellite communications system claim 1 , comprising:a transmitter that is configured to transmit a single message to a plurality of mobile terminals in a first direction on a satellite link having a higher communication cost; anda receiver that is configured to receive, in response to the single message, a plurality of status reports from the plurality of mobile terminals in a second direction having a lower communication cost, wherein the plurality of communications in the second direction are on a plurality of different frequencies.8. The system of claim 7 , wherein the plurality of ...

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Номер записи: 90
19-09-2013 дата публикации

MOBILITY ACROSS SATELLITE BEAMS USING L2 CONNECTIVITY

Номер: US20130242856A1
Автор: Chandran Girish, Foxworthy Michael, Lau Jason
Принадлежит: VIASAT, INC.

Systems and methods for providing mobility across satellite beams, are described. The system includes a first core node, a second core node in communication with the first core node at layer-2 of the OSI model (L2), and a first gateway in communication, at L2, with the first core, the first gateway configured to provide access to a first spot beam at a first location. The system further includes a second gateway in communication, at L2, with the second core node, the second gateway configure to provide access to a second spot beam at a second location, and a mobile device, at the first location, in communication, with the first gateway via the first spot beam, wherein the mobile device is assigned an IP address by the first core node. The mobile device moves from the first location to the second location. Further, the first gateway, in response to the mobile device moving from the first location to the second location, notifies the second gateway, through the first core node and the second core node, that the mobile device is moving to the second location, and transmits the session information to the second gateway, and the second gateway, in response to the notification, maintains connectivity with the mobile device using the IP address. 118.-. (canceled)19. A system for providing mobility across satellite beams , the system comprising:a first core node configured for processing at multiple layers of the OSI-model;a first gateway in communication, at layer-2 of the OSI model (L2), with the first core node, the first gateway configured to transmit and receive network access communications for a first spot beam;a second gateway in communication, at L2, with the first core node, the second gateway configured to transmit and receive network access communications for a second spot beam;a mobile device, at a first location within the first spot beam, in communication with the first gateway via the first spot beam, the communication comprising at least one communication ...

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Номер записи: 91
19-09-2013 дата публикации

Method And A System Of Providing Multi-Beam Coverage Of A Region Of Interest In Multi-Beam Satellite Communication

Номер: US20130244572A1
Автор: Angeletti Piero, Lizarraga Cubillos Juan Camilo
Принадлежит:

A method of providing multi-beam coverage of a Region of Interest (ROI) in a multi-beam satellite communication system in which a non-uniform traffic demand density is defined over said Region of Interest, the method including partitioning the Region of Interest into N>1 non-overlapping cells (V-V, V); and generating N satellite beams, each of the satellite beams providing coverage of a respective cell. The step of partitioning the Region of Interest into N>1 non-overlapping cells is performed in such a way that the traffic demand associated to the cells is substantially uniform. Advantageously, the cells form a Voronoi diagram defined over the Region of Interest, the satellite beams being pointed towards the cells of the Voronoi diagram. A satellite communication system implementing the method is also provided. 1. A method of providing multi-beam coverage of a Region of Interest (ROI) in a multi-beam satellite communication system , wherein a non-uniform traffic demand density is defined over said Region of Interest , comprising:{'sub': 1', '10', 'i, 'partitioning said Region of Interest into N>1 non-overlapping cells (V-V, V); and'}{'sub': 1', '70', 'i, 'generating N satellite beams (B-B, B), each of said satellite beams providing coverage of a respective cell;'}the method being characterizing in that said step of partitioning said Region of Interest into N>1 non-overlapping cells is performed in such a way that an integrated traffic demand associated to said cells is substantially uniform.2. A method according to wherein said partitioning said Region of Interest into N>1 non-overlapping cells is performed by an iterative algorithm comprising the steps of:{'sub': 1', '10', 'i, 'a. defining a set of N generator points (p-p, p) distributed over said Region of Interest;'}b. determining a set of N Voronoi cells for said generator points, partitioning said Region of Interest;c. determining an integrated traffic demand for each of said Voronoi cells; andd. iteratively ...

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Номер записи: 92
19-09-2013 дата публикации

Frequency Control in a Frequency Shifting Repeater

Номер: US20130244573A1
Автор: Ahmadreza Rofougaran
Принадлежит: Broadcom Corp

Aspects of a method and system for frequency control in a frequency shifting repeater are provided. In this regard, a reference frequency may be divided to generate a first pair of local oscillator (LO) signals, the first pair of LO signals may be divided to generate a second pair of LO signals. The two pairs of LO signals may be utilized to frequency shift a received signal for repeating the signal on a different frequency. The frequency shifted signal may be generated by down-converting the received signal utilizing the first pair of LO signals, up-converting the down-converted signal utilizing the second pair of LO signals, and combining the resulting up-converted signals. The reference frequency may be divided by a first scaling factor to generate the first pair of LO signal which, in turn, may be divided by a second scaling factor to generate the second pair of LO signals.

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Номер записи: 93
19-09-2013 дата публикации

Method of analyzing interference between heterogeneous wireless communication systems

Номер: US20130244582A1
Автор: Ho Kyung SON
Принадлежит: Electronics and Telecommunications Research Institute ETRI

The present invention relates to a method of analyzing interference between heterogeneous wireless communication systems, including receiving, by an interference analysis unit, interference parameters from a parameter input unit; receiving, by the interference analysis unit, polarized information from a polarized information input unit and calculating a Polarized Mismatch Loss Factor (PMLF) between a transmission antenna of an interference transmitter and a reception antenna of a victim receiver; and analyzing, by the interference analysis unit, an interference influence of the interference transmitter on the victim receiver based on the interference parameters and the PMLF. In accordance with the present invention, an interference influence between heterogeneous wireless communication systems using different polarized waves can be precisely analyzed by incorporating a loss characteristic according to a polarized mismatch between transmission and reception antennas into the interference influence.

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Номер записи: 94
26-09-2013 дата публикации

RELAY DEVICE

Номер: US20130250846A1
Автор: Matsumoto Tadashi, SUGIYAMA Takeshi
Принадлежит:

The relay device includes a first switch interposed between a first extraction unit and a second superimposing unit and a second switch interposed between a second extraction unit and a first superimposing unit. The first switch opens and closes a path where a superimposed signal is relayed from a first transmission path to a second transmission path. The second switch opens and closes a path where a superimposed signal is relayed from the second transmission path to the first transmission path. The first switch is controlled in response to reception of a first control signal to be turned off when a superimposed signal is relayed from the second transmission path to the first transmission path. The second switch is controlled in response to reception of a second control signal to be turned off when a superimposed signal is relayed from the first transmission path to the second transmission path. 1. A relay device which is interposed between a first transmission path and a second transmission path and is used in a communication system allowing communication by use of a first communication signal and a second communication signal superimposed on the first communication signal which are transmitted through the first transmission path and the second transmission path , the relay device comprising:a first extraction unit configured to extract the second communication signal from a signal transmitted through the first transmission path;a first shaping unit configured to subject the second communication signal extracted by the first extraction unit, to shaping;a second superimposing unit configured to superimpose the second communication signal subjected to shaping by the first shaping unit, on the first communication signal on the second transmission path, to send the second communication signal to the second transmission path;a second extraction unit configured to extract the second communication signal from a signal transmitted through the second transmission path;a ...

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Номер записи: 95
26-09-2013 дата публикации

System and Method for Extension of Wireless Footprint

Номер: US20130252541A1
Автор: Bugenhagen Michael K., Coppage Carl Milton
Принадлежит: CENTURYLINK INTELLECTUAL PROPERTY LLC

A system and method for communicating through a host repeater. Data is received from a remote repeater communicating with a wireless device. The host repeater registers as the wireless device on a wireless network. The data is reformatted for transmission between the wireless devices and the wireless network. 1. A method of communicating through a repeater , comprising:receiving format information at the repeater via a wired connection;selecting a first format from among a plurality of formats according to the format information, wherein the first format is compatible with a wireless cellular network;receiving, at the repeater and via the wired connection, first data in a second format compatible with a wired internet protocol network, the second format being different from the first format;converting the first data from the second format to the first format;wirelessly transmitting the first data from the repeater in the first format;wirelessly receiving, at the repeater, second data in the first format;converting the second data from the first format to the second format; andcommunicating the second data in the second format from the repeater via the wired connection.2. The method as set forth in claim 1 , wherein the plurality of formats includes the global system for mobile communications and code division multiple access formats.3. The method as set forth in claim 1 , further comprising using a static internet protocol address to communicate via the wired connection claim 1 , wherein converting the second data from the first format to the second format includes formatting the data for use with a secure internet protocol tunnel.4. The method as set forth in claim 1 , further comprising:receiving registration information in the second format via the wired connection;wirelessly transmitting the registration information in the first format; andemulating a wireless phone corresponding to the registration information when wirelessly communicating in the first format.5 ...

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Номер записи: 96
03-10-2013 дата публикации

Beamforming method, apparatus for polarized antenna array and radio communication device and system thereof

Номер: US20130257655A1
Автор: David Astely, Hai Wang, Muhammad Imadur Rahman, Ruiqi ZHANG, YANG Hu, Zhiheng Guo
Принадлежит: Telefonaktiebolaget LM Ericsson AB

The invention discloses a beamforming method for polarized antenna array consisting of a plurality of antenna elements, applied to single layer beamforming or dual layer beamforming, which includes the steps: determining ( 201 ) first beamforming weights for phase compensation among the antenna elements within each polarization direction; determining ( 202 ) second beamforming weights for phase compensation between equivalent channels of two polarization directions; and calculating ( 203 ) hybrid beamforming weights as product of the first beamforming weights and the second beamforming weights. A beamforming apparatus for polarized antenna array is also provided in the invention as well as a radio communication device and a system thereof. With the invention, the single-layer and dual-layer beamforming weights are determined for the cross-polarized antenna array without requiring full channel knowledge or the aid of PMI. Computation complexity is lowered and full power amplifier utilization can be achieved.

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Номер записи: 97
10-10-2013 дата публикации

Device and Method for Transmitting and Receiving Data

Номер: US20130266030A1
Автор: Fang Po-Hsiang, Lee Hsin-Hung, Lin Li-Tang, Su Chia-Wei, Tseng Po-Yu, Yang Shun-Hsun
Принадлежит: NOVATEK MICROELECTRONICS CORP.

A data transmission device includes a data division unit for receiving an original transmission data and dividing the original transmission data into a plurality of division data; a data generation unit for generating a plurality of packet data according to the plurality of division data and a plurality of clock data, wherein each of the clock data is a multi-bit data; and a data output unit for outputting the plurality of packet data to a data reception device; where each of the packet data includes a division data and a clock data, each of the packet data corresponds to a packet data period, and the division data corresponds to a division data period of the packet data period and the clock data corresponds to a clock period of the packet data period. 1. A data transmission device comprising:a data division unit for receiving an original transmission data and dividing the original transmission data into a plurality of division data;a data generation unit for generating a plurality of packet data according to the plurality of division data and a plurality of clock data, wherein each of the clock data is a multi-bit data; anda data output unit for outputting the plurality of packet data to a data reception device;wherein each of the packet data includes a division data and a clock data, each of the packet data corresponds to a packet data period, and the division data corresponds to a division data period of the packet data period and the clock data corresponds to a clock period of the packet data period.2. The data transmission device of claim 1 , wherein the clock period leads the division data period within each of the packet data periods.3. The data transmission device of claim 1 , wherein the clock period lags the division data period within each of the packet data periods.4. The data transmission device of claim 1 , wherein claim 1 , within each of the packet data claim 1 , the clock data comprises a leading clock data and a lagging clock data claim 1 , the ...

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Номер записи: 98
10-10-2013 дата публикации

Operating A Mobile Robot

Номер: US20130268118A1
Автор: Marshall GRINSTEAD, Orin P.F. Hoffman
Принадлежит: iRobot Corp

A robot system that includes an operator control unit, mission robot, and a repeater. The operator control unit has a display. The robot includes a robot body, a drive system supporting the robot body and configured to maneuver the robot over a work surface, and a controller in communication with the drive system and the operator control unit. The repeater receives a communication signal between the operator control unit and the robot and retransmits the signal.

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Номер записи: 99
10-10-2013 дата публикации

Electromagnetic Band Gap Structure and Method for Enhancing the Functionality of Electromagnetic Band Gap Structures

Номер: US20130268250A1
Автор: Bray Matthew, LIER Erik, Martin Spencer, Werner Douglas H.
Принадлежит: THE PENN STATE RESEARCH FOUNDATION

A method for making an electromagnetic band gap structure includes performing a single full wave simulation for the structure using a computer to perform the simulation, extracting a multiple port scattering matrix based on the single full wave simulation using a computer, and measuring or estimating a transmission of waves across the body between a first port and a second port of the body. The body has multiple ports between the first port and the second port that are defined by scattering elements using the computer. The matrix may be reduced to a two by two matrix recursively one dimension at a time using the computer. 1. An electromagnetic band structure comprising:a body defining a plurality of unit cells, each of the unit cells comprising a metallic patch; anda plurality of scattering elements, each scattering element positioned between two of the cells to create a predetermined scattering effect between the cells the scattering element is positioned between.2. The electromagnetic band structure of wherein each of the scattering elements has at least one scattering parameter that is defined to generate the predetermined scattering effect.3. The electromagnetic band structure of wherein at least one scattering parameter is defined by use of a method comprising:performing a single full wave simulation;extracting a multiple port scattering matrix based on the single full wave simulation;measuring or estimating a transmission of waves across the body between a first port and a second port of the body, the body having multiple ports; andreducing the matrix to a two by two matrix recursively one dimension at a time.5. The electromagnetic band structure of wherein the body has a plurality of apertures claim 1 , each of the apertures being positioned between immediately adjacent unit cells so that the apertures space the unit cells from each other and wherein the scattering elements are each comprised of a metallic structure and each of the scattering elements is ...

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Номер записи: 100