Direct Sequence Patents (Class 375/140)
  • Patent number: 10348382
    Abstract: Systems and methods of preventing interception of radiofrequency (RF) signals can include a first transmitter device (cover signal generator) and a second transmitter device (protected signal generator). The first transmitter device may have a first set of antennae to transmit a first RF signal in plurality of directions. The first RF signal may have a first signal strength in a target direction less than in directions adjacent to the target direction. The second transmitter device may have a second set of antennae to transmit a second RF signal to a target receiver according to an interception prevention configuration. The interception prevention configuration may include having the target receiver located along the target direction and the second RF signal having a second signal strength greater than a detection threshold relative to the first signal strength along the target direction.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: July 9, 2019
    Assignee: ROCKWELL COLLINS, INC.
    Inventor: Dana J. Jensen
  • Patent number: 10349092
    Abstract: An encoder for encoding secondary media data including metadata and control data for primary media data is shown, wherein the encoder is configured to encode the secondary media data using adding redundancy or bandlimiting and wherein the encoder is configured to output the encoded secondary media data as a stream of digital words. Therefore, the stream of digital words may be formed such that it is capable to resist a typical processing of a digital audio stream. Furthermore, processors for processing a digital audio stream are able to process the stream of digital words, since the stream of digital words may be designed as an audio-like or analog-like digital stream.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: July 9, 2019
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Robert Bleidt, Tobias Bliem, Stefan Kraegeloh
  • Patent number: 10291459
    Abstract: Coding gains can be achieved by encoding binary data directly to multi-dimensional codewords, which circumvents QAM symbol mapping employed by conventional CDMA encoding techniques. Further, multiple access can be achieved by assigning different codebooks to different multiplexed layers. Moreover, sparse codewords can be used to reduce baseband processing complexity on the receiver-side of the network, as sparse codewords can be detected within multiplexed codewords in accordance with message passing algorithms (MPAs).
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: May 14, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Hosein Nikopour, Mohammadhadi Baligh
  • Patent number: 10237093
    Abstract: A method and an apparatus apply an adaptive weight in a wireless communication system. In the method, channel estimation is performed. A weighting factor that reduces a Mean Square Error (MSE) is determined with respect to a channel in a specific section. A channel estimate value is multiplied by the weighting factor.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: March 19, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Cheol Kim, Sung-Kwon Jo, Myung-Kwang Byun
  • Patent number: 10142061
    Abstract: An STBC/SFBC-based signal transmission method and apparatus is provided for use in a multi-carrier system. A method for a transmitter to transmit a signal to a receiver in a diversity transmission mode according to the present invention includes transmitting a filter index indicating a filter allocated to the receiver and transmitting Space Time Block Code (STBC) symbols to the receiver at symbol positions selected based on the filter index.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: November 27, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyeongyeon Kim, Ming Hoka, Chanhong Kim, Jiyun Seol, Yeohun Yun, Yongho Cho
  • Patent number: 10121122
    Abstract: An RFID device may include one or more manually activated RFID tags configured to transmit unique RFID signals in response to a manual activation thereof. A transaction may be defined upon receiving a confluence of multiple RFID signals at the same time, or at nearly the same time, at an RFID reader. A transaction may also be defined upon receiving multiple RFID signals or confluences of such signals in a predetermined series or sequence. The RFID devices may include a single manually activated RFID tag, or two or more of such tags, which may be individually activated by one or more manual interactions from a user.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: November 6, 2018
    Assignee: Amazon Technologies, Inc.
    Inventors: Ryan Scott Russell, Wesley Scott Lauka, Ned Lecky, Joshua Joel Boelter
  • Patent number: 10084515
    Abstract: A method and apparatus are disclosed for communication in a Millimeter Wave Hotspot (mmH) backhaul system which uses mesh nodes. A mmH mesh node may receive a control signal which includes a total number of available control slots. The mesh node may determine the number of iterations of a resource scheduling mechanism that can be made during the time period of all available control slots, based on the number of neighbor nodes for the mesh node. Further, the mesh node may receive control slot information, including information about traffic queues and priorities. The mesh node may then perform resource scheduling using the resource scheduling mechanism based on the currently received control slot information and control slot information received in previous iterations of resource scheduling. The mesh node may also adjust a preamble based on a time between a last packet transmission and a current packet transmission to a neighboring node.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: September 25, 2018
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Steven Ferrante, Arnab Roy, Philip J. Pietraski, Ravikumar V. Pragada
  • Patent number: 10079614
    Abstract: In a noise canceler, interference signals received by sub-antennas 12 are cross-correlated by a first correlation-value calculation unit and the peaks of the interference signals are detected by a first peak detector. Interference signal information is acquired by a first-interference-signal information acquisition unit and the interference signals are synthesized by an interference signal synthesizer. A signal received by a main antenna and the synthesized interference signal are correlated by a second correlation-value calculation unit and the peak of the synthesized interference signal is detected by a second peak detector. The interference signal information is acquired by a second interference-signal-information acquisition unit and an interference signal replica is generated by an interference signal replica generator. The interference signal replica is subtracted by an interference signal removal unit from the signal received by the main antenna.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: September 18, 2018
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Yoichi Kushioka, Mitsuhiro Takashima
  • Patent number: 10075216
    Abstract: Provided in the present invention is a method for avoiding downlink interference between an indoor DAS system and a small base station, the steps comprising: step 1: determining an initial access RU, and establishing a signal strength table; step 2: the DAS system, by means of the chosen RU, attempts to establish a downlink with UE 1, and detects the signal to interference plus noise ratio (SINR) value of the downlink signal of UE 1, and comparing same with a preset threshold value ?1; step 3: UE 1 maintains one or a plurality of RU downlinks assigned thereto by the DAS system, during the communication process continuously detects an SINR value at a set time interval, and on the basis of whether same is greater than ?1, ensures a corresponding service quality.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: September 11, 2018
    Assignee: SUNWAVE COMMUNICATIONS CO., LTD.
    Inventors: Peng Pan, Xin Chen, Junrong Yan, Yingbiao Yao
  • Patent number: 10001987
    Abstract: A method is for updating an original firmware file of an I/O module which communicates with multiple host-end devices and stores the original firmware file. The method includes: receiving a current-received data packet from one host-end device; when it is determined that the current-received data packet is a first data packet constituting an update file, and that the original firmware file is not undergoing an update process, setting a status flag to indicate that the original firmware file is undergoing an update process, storing the current-received data packet; and repeating the previous steps when it is determined that the current-received data packet is not a last one data packet constituting the update file.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: June 19, 2018
    Assignee: Mitac Computing Technology Corporation
    Inventors: Yi-Lan Lin, Jen-Chih Lee, Kwang-Chao Chen, Hung-Tar Lin, Li-Tien Chang, Heng-Chia Hsu
  • Patent number: 9942935
    Abstract: A server rack includes a first component including a host processor to provide a hosted environment and a first management system to provide a managed environment separate from the hosted environment, to establish a first wireless connection to a mobile device, to process a first management request from the mobile device in the managed environment, and to detect that the first wireless connection has unexpectedly terminated, and a second component including a second management system to receive an indication from the first management controller that the first wireless connection was unexpectedly terminated, to establish a second wireless connection to the mobile device in response to the indication, to receive a second management request from the mobile device, and to send the second management request to the first management system. The first management system being further to process the second management request in the managed environment.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: April 10, 2018
    Assignee: DELL PRODUCTS, LP
    Inventors: Matthew Bryan Gilbert, Hana Schuster Smith
  • Patent number: 9942869
    Abstract: A method comprising generating a baseband information signal by mixing a received modulated carrier signal with a local oscillator (LO) signal having an LO frequency; obtaining baseband signal samples of the baseband information signal having a baseband signal magnitude and a baseband signal phase; determining a cumulative phase measurement associated with baseband signal samples having a baseband signal magnitude greater than a threshold; and, applying a correction signal to compensate for an LO frequency offset of the LO frequency based on the cumulative phase.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: April 10, 2018
    Assignee: PhasorLab, Inc.
    Inventor: Joshua C. Park
  • Patent number: 9923549
    Abstract: There is provided a finite impulse response (FIR) filter for filtering an input voltage signal to generate an output current signal, the FIR filter including a plurality of sample and hold (SH) circuits configured to simultaneously receive the input voltage signal, to sample the input voltage signal at successive sample times according to a sample clock, and to generate a plurality of sampled voltage signals, and a plurality of programmable analog multipliers coupled to the plurality of SH circuits and configured to multiply the plurality of sampled voltage signals by a plurality of binary multiplication factors to generate the output current signal.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: March 20, 2018
    Assignee: RAYTHEON COMPANY
    Inventors: Denpol Kultran, Richard T. Hennegan, Harry B. Marr
  • Patent number: 9871554
    Abstract: Provided are a method and vector computing unit for implementing de-scrambling and de-spreading, and a computer storage medium. The method includes that: an operation of complex multiplication on baseband data and corresponding de-scrambling and de-spreading codes is performed by adopting data transformation and addition, and data obtained by the complex multiplication is stored into a vector register file; a row of data obtained by the complex multiplication is read from the vector register file, every two adjacent pieces of data in the row of data are accumulated to obtain a half row of data, a ¼ row of data, and finally one piece of accumulated data; and the accumulation processing is continued on other rows of data to implement accumulation of each row of data obtained by the complex multiplication in the vector register file.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: January 16, 2018
    Assignee: ZTE MICROELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Wenqiong Lin, Li Hua, Yongsheng Zhang
  • Patent number: 9872246
    Abstract: Power conservation is provided in a network of globally unsynchronized wireless communication devices that use asynchronous channel hopping. Each wireless communication device defines its own channel hopping schedule. The channel hopping schedules include channel hop intervals when the device's receiver is active for receiving transmissions, and sleep intervals when the receiver is in a low power sleep state. Parameters associated with the sleep intervals are defined by each wireless communication device independently of external constraint.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: January 16, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Kumaran Vijayasankar, Arvind Kandhalu Raghu, Ramanuja Vedantham
  • Patent number: 9844069
    Abstract: Embodiments of the present invention provide a dual band adaptive concurrent processing method and apparatus. In the embodiments of the present invention, by using statistical information of services at first and a second frequency bands in the Nth adjustment period, performance of the services at the frequency bands in an adjustment period may be acquired. Based on the statistical information, and a quality of service (QoS) requirement that the services at the two frequency bands need to meet, a second coefficient of proportionality between timeslots occupied by the services at the two frequency bands in the (N+1)th adjustment period may be determined, so that switching control on first and second channels may be performed in the (N+1)th adjustment period according to the determined second coefficient of proportionality.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: December 12, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Lin Gao, Wenjun Li, Yuan Zhou
  • Patent number: 9825782
    Abstract: Certain aspects of the present disclosure provide an apparatus for wireless communications. The apparatus comprises an interface configured to receive a plurality of channel estimation sequences, wherein each one of the plurality of channel estimation sequences is received on a respective one of a plurality of channels, each one of the plurality of channels having a respective one of a plurality of frequency bands. The apparatus also comprises a processing system configured to generate a channel estimation for each one of the plurality of channels using the respective one of the plurality of channel estimation sequences, and to generate a collective channel estimation based on the channel estimations.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: November 21, 2017
    Assignee: QUALCOMM, Incorporated
    Inventors: Alecsander Eitan, Amichai Sanderovich, Gal Basson
  • Patent number: 9819387
    Abstract: A system and method for generating a channel statistics dependent frequency hopping pattern that requires low computational complexity and simultaneously maximizes channel capacity and minimizes the symbol error rate or bit error rate under partial band tone interference and Rician or other fading environments. The system includes one or more transmitting units and one or more receiving units communicating over a wireless communication network. A signal generated at one of the transmitting units is modified via the channel statistics dependent frequency hopping pattern as generated via one of the receiving units for improved signal accuracy and avoiding interferer detection and/or interference hits.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: November 14, 2017
    Assignees: WICHITA STATE UNIVERSITY, THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE
    Inventors: Hyuck M. Kwon, Matthew R. Hannon, Khanh D. Pham
  • Patent number: 9753877
    Abstract: Methods and apparatus are provided for processing a data value in a read channel of a memory device. The data value provided to a general purpose processor for processing. The data value is not decoded data and may comprise one or more of a raw data value and an intermediate data value. The data value can be provided to the general purpose processor, for example, upon a detection of one or more predefined trigger conditions. A data value can be obtained from a memory device and then be redirected to a general purpose processor. The data value is not decoded data. The redirection can be conditionally performed if one or more predefined bypass conditions exist. The general purpose processor is optionally time-shared with one or more additional applications.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: September 5, 2017
    Assignee: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.
    Inventors: Nils Graef, Erich F. Haratsch
  • Patent number: 9749005
    Abstract: Stable clock synchronization is ensured even under a multi fading environment such as the non-line-of-sight communication. On a transmission side, multiplying a clock signal by a spreading code, a spread-spectrum clock signal is generated whose spectrum being made to spread; frequency conversion is performed on a signal obtained by superimposing an information signal on the spread-spectrum clock signal and a radio signal is transmitted by wireless. On the other hand, on a receiving side, the radio signal is received, frequency conversion is performed on the radio signal, and a frequency-converted radio signal is divided into two lines. A clock signal extracted by performing spectrum despreading on one of divided radio signals by multiplying a spreading code; and clock synchronization is performed on other one of the divided radio signals using the clock signal having been extracted.
    Type: Grant
    Filed: February 16, 2015
    Date of Patent: August 29, 2017
    Assignee: NEC CORPORATION
    Inventor: Takayuki Murai
  • Patent number: 9672666
    Abstract: A method and apparatus for collecting vehicle data is provided. The method for collecting vehicle data in a vehicle data collection server communicating with a vehicle through a wireless network includes receiving vehicle data corresponding to first to Nth data items from a first vehicle. When alternative data collection vehicles are needed, the method searches for the alternative data collection vehicles in a group of vehicles, for each of the first to Nth data items, receives vehicle data corresponding to at least one of the first to Nth data items through the searched alternative data collection vehicles, and stores the vehicle data received from the first vehicle and the vehicle data received from the alternative data collection vehicles.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: June 6, 2017
    Assignee: Hyundai Motor Company
    Inventors: Dong Jin Shin, Sang Jae Han, Dong Youl Lee, Jae Am Seo, Chul Min Kim
  • Patent number: 9629177
    Abstract: A method for transmitting and receiving broadcast signals in a radio broadcasting communication system is provided together with an associated apparatus. The transmitting method includes creating a frame having a preamble slot, a data slot and a control slot, and sending the created frame. The control slot has information for assigning the data slot to one of an uplink and a downlink. The receiving method includes receiving such a frame wherein the control slot has scheduling information for each user, and extracting the data slot from the received frame by using the scheduling information in the control slot. These methods may realize an interactive broadcasting by separately employing broadcast signals for the uplink and downlink.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: April 18, 2017
    Assignees: Samsung Electronics Co., Ltd, Peter Jung & Guido Bruck Institut Fur Kooperationstechnik GBR
    Inventors: Yeon-Ju Lim, Sung-Ryul Yun, Admir Burnic, Alexander Viebmann, Christian Kocks, Christoph Spiegel, Peter Jung
  • Patent number: 9471792
    Abstract: There is provided a detection arrangement for detecting an attack to internal signals in a semiconductor device. The detection arrangement comprises a first input terminal, a second input terminal, and a comparison unit. The first input terminal is adapted to receive a first signal being indicative for a signal at a first stage of a driver of the semiconductor device, the driver being capable to drive signals internally to the semiconductor device. The second input terminal is adapted to receive a second signal being indicative for a signal at a second stage of the driver of the semiconductor device. The comparison unit is adapted to compare the first signal and the second signal and to determine a time period during which the signals are equal, wherein the determined time period is indicative for a potential attack, if the determined time period is above a predefined threshold.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: October 18, 2016
    Assignee: NXP B.V.
    Inventors: Soenke Ostertun, Joachim Christoph Hans Garbe
  • Patent number: 9467208
    Abstract: RFID apparatus includes transmission means for transmitting an RF signal; reception means for receiving a modulated RF signal; and demodulation means for demodulating a received modulated signal. The apparatus comprises generating means for generating a RF signal dependent on an incoming RF signal, the incoming RF signal being generated by different apparatus, and the apparatus is arranged to transmit the generated RF signal such that the generated RF signal interferes with the incoming RF signal. The RFID apparatus has both the means to respond to an RF reader device, in tag emulation mode, and means to function as an RF reader device, in reader mode.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: October 11, 2016
    Assignee: Broadcom Europe Limited
    Inventor: Glen Pitt-Pladdy
  • Patent number: 9408146
    Abstract: A wireless field device that performs a wireless communication with other field devices in a wireless network through a gateway. The device includes: a battery incorporated in the field device to activate the field device; and a wireless communication module configured to exchange radio signals with the gateway to perform the wireless communication with said other field devices. When the field device starts procedure for joining in the wireless network, firstly, the wireless communication module continuously accesses the gateway in a first period to receive an advertisement signal from the gateway, and when the wireless communication module fails to receive the advertisement signal in the first period, the wireless communication module intermittently accesses the gateway until receiving the advertisement signal from the gateway.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: August 2, 2016
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Hiroki Yoshino, Toshimitsu Uemura, Kuniaki Sugitani, Naoyuki Fujimoto
  • Patent number: 9319111
    Abstract: The disclosure relates to methods and apparatuses that allow for channelization code allocation adapted for uplink MIMO transmissions. A method for use in a user equipment of a telecommunication system comprises spreading data symbols of a plurality of streams to be transmitted from the user equipment as MIMO transmissions. The step of spreading the data symbols comprises allocating, for each stream, at least one channelization code (62) to be applied for spreading the data symbols of the stream. The plurality of streams are allocated channelization codes (62) from a predefined code tree (61) of applicable channelization codes such that any channelization code (62) is allocated to more than one stream only if there is no applicable channelization code left in the code tree (61) which currently is not allocated for any stream. The channelization code allocation scheme makes it possible to avoid inter-stream interference in many scenarios of uplink MIMO transmissions.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: April 19, 2016
    Assignee: Optis Wireless Technology, LLC
    Inventors: Jinhua Liu, Johan Hultell, Johan Bergman, Qingyu Miao
  • Patent number: 9313063
    Abstract: An apparatus and method for transmitting data with conditional zero padding is provided. In accordance with an embodiment of the disclosure, a transmitter transmits data to a receiver by transmitting symbols such that each symbol is preceded by a cyclic prefix of a fixed length and the symbol conditionally includes enough zero padding to avoid ISI (Inter-Symbol Interference) between consecutive symbols. In some implementations, if the fixed length for cyclic prefixes is long enough to avoid ISI between consecutive symbols, then the symbols may omit zero padding. Otherwise, the symbols may include enough zero padding to avoid ISI between consecutive symbols. The zero padding may be zero tail or zero head.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: April 12, 2016
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Ming Jia, Jianglei Ma, Wen Tong
  • Patent number: 9281981
    Abstract: An apparatus and method for transmitting data with conditional zero padding is provided. In accordance with an embodiment of the disclosure, a transmitter transmits data to a receiver by transmitting symbols such that each symbol is preceded by a cyclic prefix of a fixed length and the symbol conditionally includes enough zero padding to avoid ISI (Inter-Symbol Interference) between consecutive symbols. In some implementations, if the fixed length for cyclic prefixes is long enough to avoid ISI between consecutive symbols, then the symbols may omit zero padding. Otherwise, the symbols may include enough zero padding to avoid ISI between consecutive symbols. The zero padding may be zero tail or zero head.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: March 8, 2016
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Ming Jia, Jianglei Ma, Wen Tong
  • Patent number: 9276704
    Abstract: A wireless device, and corresponding method, having a receiver configured to receive a signal having in-phase and quadrature components; a non-linear filter demodulator configured to translate noncoherently the in-phase and quadrature components into a phase domain signal; a coherence acquisition unit configured to estimate and correct at least one coherence parameter based on the in-phase and quadrature components and the phase domain signal; and a detector configured to detect information in the phase domain signal.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: March 1, 2016
    Assignee: Intel Corporation
    Inventors: David Arditti Ilitzky, Edgar Borrayo Sandoval, Arturo Veloz, Rocio Hernandez Fabian
  • Patent number: 9154183
    Abstract: A method can be used for channel mapping based on frequency hopping. A working channel label of a node is computed according to the number of working channels of the node in frequency hopping mode, an identifier of the node, and a time parameter corresponding to a current superframe. A working channel is determined according to the working channel label. Data is transmitted on the working channel within the current superframe.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: October 6, 2015
    Assignee: Huawei Technologies Co., LTD.
    Inventor: Pei Liu
  • Patent number: 9131465
    Abstract: A method for data transmission. The method including the steps of generating at least one resource tree, mapping a plurality of resource elements into respective leaf nodes in the at least one resource tree according to a certain mapping scheme, with each node in the at least one resource tree representing a resource allocation scheme for data transmission, and transmitting data using a resource allocation scheme selected from among the plurality of resource allocation schemes represented by respective nodes in the at least one resource tree. In response to reception of the data, a receiver decodes the data by recursively applying the plurality of resource allocation schemes represented by respective nodes in the at least one resource tree until the data is decoded.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: September 8, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Zhouyue Pi
  • Patent number: 9118410
    Abstract: A limited feedback method and apparatus for two-way relay channels with physical network coding are disclosed. An embodiment of the invention provides a method of providing parameters as feedback to two terminals according to channel conditions by a relay for two-way communication in a two-way relaying system using PNC (physical network coding). This method includes: (a) quantizing phase difference information of two-way channels of the two terminals in consideration of whether or not a ratio of a minimum distance between constellation points is periodic according to modulation level; and (b) transmitting feedback information, which contains at least one of the phase difference information and the power control information of the two terminals, as a limited number of bits to the two terminals. Here, the number of bits for the phase difference information or the number of bits for the power control information is determined according to the modulation level.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: August 25, 2015
    Assignee: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: In kyu Lee, Young-Tae Kim, Kwang-Won Lee
  • Patent number: 9095002
    Abstract: The invention provides, in some aspects, an improved control network (or portion thereof) that includes a plurality of nodes, each associated with respective control devices (e.g., controllers, actuators, sensors, etc.). Each of the nodes also includes one or more radios supporting wireless communications pathways with one or more of the other nodes, which pathways together form at least part of a mesh network. At least a first one of the nodes wirelessly transmits information simultaneously, or substantially simultaneously, over at least two pathways formed in a mesh network to a second one of the nodes. The radio(s) of the first node, according to related aspects of the invention, sends that information wirelessly at different frequencies along each of those pathways.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: July 28, 2015
    Assignee: Invensys Systems, Inc.
    Inventors: Gary Williams, Chris W. Rogers
  • Patent number: 9094915
    Abstract: A method in a communication device and a communication device (100) for adapting a transmission of data are provided. The transmission is transferred from a first chip (110) to a second chip (120) over a chip-to-chip interface (104, 304). The chip-to-chip-interface comprises a wired connection between the first chip and the second chip which is comprised in the communication device. The communication device receives (201) the radio signal (330), comprising the transmission of data from another communication device. The communication device determines (202), from the received radio signal (330), modulation and coding information, which is used for determining (203) a channel quality. Further, the communication device (100) adapts (204) the transmission of data based on the determined channel quality of the received radio signal (330) in such way that at least the determined channel quality is obtained when transferring (205) the transmission of data over the chip-to-chip interface to the second chip.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: July 28, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Thomas Olsson, Anders Carlsson, Bengt Lindoff, Johan Nilsson
  • Patent number: 9088469
    Abstract: A receiver may comprise a sequence estimation circuit and operate in at least two modes. In a first mode, the sequence estimation circuit may process OFDM symbols received on a first number of data-carrying subcarriers to recover a number of mapped symbols per OFDM symbol that is greater than the first number. In a second mode, the sequence estimation circuit may process OFDM symbols received on a second number of data-carrying subcarriers to recover a number of mapped symbols per OFDM symbol that is equal to the second number. The second number may be equal to or different from the first number. While the receiver operates in the first mode, the sequence estimation circuit may be operable to generate candidate vectors and process the candidate vectors using a controlled ISCI model to generate reconstructed physical subcarrier values.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: July 21, 2015
    Assignee: MagnaCom Ltd.
    Inventors: Amir Eliaz, Ilan Reuven
  • Patent number: 9088939
    Abstract: Systems and methodologies are described that facilitate mapping multiple evolved packet system (EPS) bearers to a single relay eNB radio bearer. In particular, an upstream eNB can select a radio bearer of a downstream eNB for association to an EPS bearer; the selection can be based on a best effort match or substantially any logic. The upstream eNB can store an association between the radio bearer and EPS bearer for subsequent downstream packet routing. The upstream eNB can also provide an indication of the selected radio bearer to the downstream relay eNB to facilitate upstream packet routing therefrom. The upstream eNB can alternatively select the radio bearer of the downstream eNB for association to the EPS bearer based on a quality of service (QoS) class identifier (QCI) of the EPS bearer.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: July 21, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Fatih Ulupinar, Gavin B. Horn, Parag A. Agashe, Nathan E. Tenny, Yongsheng Shi
  • Patent number: 9088345
    Abstract: Methods, devices, and systems for the transmission of information in a wireless communication system are disclosed. In one embodiment, a method for the transmission of information in a wireless communication system comprises receiving a downlink message, wherein the downlink message includes a first control channel element; determining a first index using the location of the first control channel element; determining a second index; determining a first orthogonal resource using the first index; determining a second orthogonal resource using the second index; spreading an uplink message using the first orthogonal resource to form a first spread signal; spreading the uplink message using a second orthogonal resource to form a second spread signal; transmitting the first spread signal using a first antenna; and transmitting the second spread signal using a second antenna.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: July 21, 2015
    Assignee: BlackBerry Limited
    Inventors: Hua Xu, Youn Hyoung Heo, Zhijun Cai, Andrew Mark Earnshaw, Mo-Han Fong, Sean Michael McBeath, Robert Mark Harrison
  • Patent number: 9077496
    Abstract: The present invention relates to a method for generating a reference signal, including: obtaining first control information, where the first control information indicates or includes cyclic shift related information which is used by a terminal belonging to a serving cell to send a reference signal; and sending the first control information to the terminal belonging to the serving cell, so that the terminal belonging to the serving cell generates the reference signal according to the cyclic shift related information which is indicated or included by the first control information and used by the terminal to send the reference signal, where a variation rule of a cyclic shift which the terminal belonging to the serving cell uses to generate the reference signal is the same as that of a cyclic shift which a terminal belonging to a coordinated cell uses to generate the reference signal.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: July 7, 2015
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Mingyu Zhou, Lei Wan, Xiaotao Ren, Yuan Xia, Zuomin Wu, Qiang Li
  • Patent number: 9077442
    Abstract: A method of operating a transmitter (FIGS. 3A and 5A) is disclosed. The method includes receiving a sequence of data bits (DATA), wherein each data bit has a respective sequence number. A first data bit of the sequence is spread (508) with a first spreading code (504) determined by the sequence number (502) of the first data bit. A second data bit of the sequence is spread (508) with an inverse of the first spreading code (506) determined by the sequence number (502) of the second data bit. The first and second data bits are modulated (510) and transmitted (516) to a remote receiver.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: July 7, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Timothy Mark Schmidl, Anand G. Dabak
  • Patent number: 9071493
    Abstract: Methods and apparatus for correcting frequency errors between a carrier frequency of a signal received by a wireless device and a reference frequency local to the device. For certain aspects, such a method generally includes receiving a signal in a receiver having an LO producing a reference frequency, a radio frequency (RF) phase-locked loop (PLL), and a digital rotator, estimating a frequency difference between a carrier frequency of the received signal and the LO reference frequency, and applying the estimated frequency difference to the RF PLL and the digital rotator.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: June 30, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Brian C. Banister, Shivratna G. Srinivasan, Matthias Brehler, Sunil Kumar Kandukuri Narayana, Raghu N. Challa
  • Patent number: 9036684
    Abstract: Compressive sampling is used to generate pilot symbols to be transmitted over an array of antennas in a MIMO wireless communications device. A pilot symbol is transmitted over the array of antennas according to a spatially randomized antenna transmission function that randomly changes across the array of antennas. The randomized antenna transmission function may randomly select/deselect antennas and/or randomly change amplitude and/or phase of the pilot symbol transmission. Channel estimates can be constructed at a receiver based on the spatially randomized pilot symbols that were transmitted.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: May 19, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Dennis Hui, Kumar Balachandran, Jung-Fu Cheng, Jiann-Ching Guey
  • Patent number: 9031117
    Abstract: Techniques for handling fingers with large delay spread through utility optimization are described. A first signal may be received, through a finger of a plurality of fingers in a receiver, at a time that is later than a reference time after a reference signal is received by a reference finger of the plurality of fingers. The reference signal may be included in an on-time group corresponding to a cell. The first signal may be included in a late group corresponding to a virtual cell. The first signal and the reference signal may be compared to one another. Based on the comparing, it may be determined whether to wait for additional signals in the late group or process the signals in the on-time group.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: May 12, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Tao Cui, Wei Zhang, Guang Xie
  • Patent number: 9014235
    Abstract: A communication apparatus includes a Doppler shift amount calculation unit configured to calculate a Doppler shift amount of a reception signal which is received from an artificial satellite and is obtained by modulating a signal, for which spectrum spreading is performed by using a predetermined spread code, by a predetermined carrier frequency, a sampling interval setting unit configured to set a sampling interval, at which down sampling is performed for the reception signal, a down sampling unit configured to perform the down sampling for the reception signal, a coherent addition unit configured to perform coherent addition of the reception signal, a spread code generation unit configured to generate a spread code, and a phase detection unit configured to perform correlation calculation between a calculation result of the coherent addition and the spread code and detects a phase of the spread code of the reception signal.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: April 21, 2015
    Assignee: Sony Corporation
    Inventor: Suguru Houchi
  • Patent number: 9008155
    Abstract: Acquiring a satellite signal, by, receiving a CDMA-modulated signal; generating a plurality of CDMA-type test signals comprising a reference test signal having a first chip duration, and a plurality of test signals delayed/anticipated of a corresponding time offset from the respective test reference signal, less than the chip duration; calculating correlations between the CDMA-modulated signal and the plurality of test signals for obtaining a plurality of correlation results; selecting, based on the correlation results, acquisition parameters associated to a candidate satellite signal; acquiring or rejecting the acquisition parameters selected based on the correlation results.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: April 14, 2015
    Assignee: STMicroelectronics S.r.l.
    Inventor: Domenico Di Grazia
  • Patent number: 9001866
    Abstract: A communication node (115) with is arranged to receive signals from at least one antenna (120). A frequency domain conversion is executed (201) for two or more antenna signals by receiving (201a) a continuous signal from one of the at least one antenna (120), splitting (201b) the continuous antenna signal into windowed signals, and performing (201e) a frequency domain conversion of the windowed signals. Then, a channel estimate based on a frequency converted pilot signal is provided (202) by extracting (202a) a pilot signal, splitting (202b) the pilot signal into windowed signals, performing (202d) a frequency domain conversion of the split pilot signal; and providing (202e) a channel estimate of the frequency converted pilot signal. Diversity combined signals are provided (203) by performing (203a) diversity combining based on the frequency converted windowed signals and the channel estimate, and by combining (203c) the diversity combined signals.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: April 7, 2015
    Assignee: Unwired Planet, LLC
    Inventors: Bjorn Sihlbom, Bo Lyckegard
  • Publication number: 20150055687
    Abstract: Apparatus for identifying a communicating mobile terminal comprises an electromagnetic coupling device, an ultra-wide-band radio subsystem and a monitoring subsystem. The electromagnetic coupling device defines an exclusive zone for electromagnetic coupling between the device and the communicating mobile terminal, The ultra-wide-band radiofrequency subsystem simulates the availability to communicate with the mobile terminal of at least one base station of a telecommunication network. The monitoring subsystem recognizes a unique digital signature of the communicating mobile terminal implementing samples of an electromagnetic trace of a message sent by the mobile terminal in attempt to connect to a simulated base station.
    Type: Application
    Filed: February 28, 2013
    Publication date: February 26, 2015
    Applicant: MOBI RIDER
    Inventor: Nghia Phan
  • Patent number: 8964811
    Abstract: A method for identifying the presence of an electronic transmission comprising detecting, by a detecting device, the presence of a burst of electromagnetic energy that results from the presence of an original carrier signal and transmitting, by a transmitting device, a spread spectrum meta-carrier signal within a portion of a bandwidth of the original carrier signal, wherein the meta-carrier signal contains information about the original carrier signal and is transmitted such that the meta-carrier signal occupies at least a portion of a bandwidth of the original carrier signal during the presence of the burst of electromagnetic energy.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: February 24, 2015
    Assignee: Comtech EF Data Corp.
    Inventors: Michael Beeler, Cris M. Mamaril, Jeffery Harig
  • Patent number: 8964813
    Abstract: Binary Offset Carrier (BOC) is the agreed modulation for signals of next generation Global Navigation satellite systems (GNSS). Compared to current phase shift keying (PSK) modulation by a code, there is a further modulation by a sub-carrier. There is a known major difficulty with BOC called ‘false lock’ where early/late gates settle on the wrong peak of the multi-peaked correlation function. This invention eliminates the problem by eliminating that correlation. Instead, a two dimensional correlation is tracked independently to realize a dual estimate. An unambiguous lower accuracy estimate derived from the code phase is used to make an integer correction to a higher accuracy but ambiguous independent estimate based on the sub-carrier phase. The actual receiver may adopt a triple loop, instead of the usual double loop, where carrier phase, sub-carrier phase and code phase are tracked independently but interactively.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: February 24, 2015
    Assignee: The University of Surrey
    Inventors: Matthew Stephen Hodgart, Paul David Blunt
  • Publication number: 20150043620
    Abstract: A mobile communication terminal is provided, which comprises: a first antenna, configured to receive a high-band radio frequency (RF) signal from the outside; a wireless transceiver, configured to acquire the high-band RF signal from the first antenna and generate a first base-band signal; a base-band processor, configured to acquire the first base-band signal from the wireless transceiver and modulate the first base-band signal, and further generate a second base-band signal and a third base-band signal; the wireless transceiver being further configured to convert the second base-band signal into a to-be-transmitted high-band RF signal and convert the third base-band signal into a to-be-transmitted low-band RF signal; a second antenna, configured to acquire and transmit the to-be-transmitted high-band RF signal and the to-be-transmitted low-band RF signal; wherein the second antenna is further configured to receive a low-band RF signal from the outside.
    Type: Application
    Filed: March 6, 2013
    Publication date: February 12, 2015
    Applicant: HUIZHOU TCL MOBILE COMMUNICATION CO., LTD
    Inventors: Jian Bai, Lian Zhang, Shengyin Xie, Xin Jin
  • Patent number: 8953533
    Abstract: Provided is a wireless communication technique capable of supporting communication using a single component carrier, and communication using a plurality of component carriers. The communication using the plurality of carriers comprises a processing means for performing the signal processing in accordance with each of the carriers with respect to the common signal sequence used by the plurality of carriers. The present invention makes it possible to cope with the communication employing a single component carrier and the wireless communication employing a plurality of the component carriers. Further, PAPR of the reference signals can be made small because there is no possibility that the identical CAZAC sequence is used among the component carriers when a plurality of the component carriers are employed.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: February 10, 2015
    Assignee: NEC Corporation
    Inventors: Takamichi Inoue, Kenji Koyanagi, Yoshikazu Kakura